Wire Money Tab.Screen to MoneyScreenStack (was WalletTabModalFlow stub) and update TabBar tap handler to navigate to the tab instead of pushing Routes.MONEY.ROOT, so the tab bar stays visible on Money Home and the back-button removal in MUSD-743 doesn't dead-end the screen.

… visible

Switch the wallet-home Cash section from pushing the outer Routes.MONEY.ROOT
stack to navigating directly to the Money tab. Without this, MoneyScreenStack
mounted above HomeTabs and the global tab bar disappeared, leaving Money Home
as a dead-end after MUSD-743 dropped the back button.

… tab bar

With the global tab bar now visible on Money Home, the always-on MoneyFooter
Add money button stacked on top of it. Drop the render here; the design
intent is for the Add money CTA to live inside the "Fund your account" card
in the empty state, not as a sticky footer. MUSD-747 will reintroduce the
footer conditionally with peek-and-hide behaviour.

The always-on MoneyFooter rendered as a sticky overlay at the bottom of
Money Home, which now stacks on top of the new global tab bar. Move the
footer button into the ScrollView's content container as the last child
and strip the safe-area / absolute positioning that pinned it. The button
stays visible at the bottom of the scrollable list; it just no longer
overlays the tab bar. MUSD-747 will reintroduce sticky behaviour with
peek-and-hide based on the onboarding stepper's viewport state.

The always-on MoneyFooter sat as a sticky overlay at the bottom of Money
Home, which stacked on top of the new global tab bar. Move the footer
inside the ScrollView content as the last child, strip the absolute /
safe-area positioning, and add vertical margin so the button has space
both from the previous section and from the tab bar below. MUSD-747 will
reintroduce sticky behaviour with peek-and-hide based on the onboarding
stepper's viewport state.

Spacing decision: use Divider components above and below MoneyFooter to
match the consistent my-5 rhythm used between all other Money Home
sections. The footer wrapper uses px-4 py-3 — identical to MoneyEarnings
and other section components — so the button is bracketed by dividers
exactly like every other section on the page.

The previous commit added a leading Divider before MoneyFooter that
caused a double-divider in the isMilestone path (MoneyCondensedInfoCards
already had a trailing Divider). Move the leading Divider inside the
!isMilestone block so MoneyWhatYouGet gets a trailing Divider, giving
both state paths exactly one Divider above and one below MoneyFooter —
matching the consistent my-5 rhythm shared by every other section.

…ttom

The visible 1px line of the trailing Divider after MoneyFooter was
removed in favour of paddingBottom: 40 on the scroll content, which
preserves the equivalent vertical spacing (matching the combined my-5
margin of a Divider) without rendering a visible separator at the very
bottom of the page. Consistent with MoneyHowItWorksView's pattern of
using contentContainerStyle paddingBottom for bottom-of-scroll breathing
room.

The Money tab was using IconName.Bank (building icon); the Figma design
shows a $-in-circle ("coin") icon. IconName.Coin already exists in the
icon set and matches the design exactly — both for the inactive (outline)
and active (filled) states, with the standard tab-icon styling.

Reverts all changes to app/component-library/components/Navigation/TabBar/*
and to useCashNavigation so this PR no longer triggers
@MetaMask/design-system-engineers CODEOWNERS review, and so the
CashSection.test.tsx test that asserts the original navigate signature
passes again.

The tab bar stays visible on Money Home because the Money Tab.Screen is
now registered as Routes.MONEY.ROOT (instead of Routes.MONEY.HOME), and
the outer Stack.Screen for Routes.MONEY.ROOT is removed. The original
TabBar handler navigate(Routes.MONEY.ROOT, { screen: Routes.MONEY.HOME })
resolves to the tab itself with the inner stack's initial screen, so the
global tab bar stays mounted.

Side effect: the Money tab icon reverts to IconName.Bank. The IconName.Coin
swap will land in a separate small DS-owned PR.

After moving MoneyScreenStack from a top-level Stack.Screen into a
Tab.Screen inside HomeTabs, the conditional-rendering test could no
longer find Routes.MONEY.ROOT among the outer Stack navigator's
direct children. Render HomeTabs separately (mirroring the existing
getHomeTabsComponent helper) and inspect the TabNavigator's children
to assert the Money route is registered when the feature flag is on
and absent when it is off.

… title

HeaderStandard wraps the title prop in a BoxColumn with alignItems
Center, which forces the title to center regardless of the parent
HeaderBaseVariant. Switch to HeaderBase directly with the title as a
string child; HeaderBaseVariant.Display then renders it left-aligned
with HeadingLg. Replaces the previous attempt that only flipped the
variant without escaping HeaderStandard's centering wrap.

HeaderBase has no default side padding (HeaderStandard's px-2 wasn't
inherited when we switched). Add twClassName="px-4" so the title sits
16px from the left and the kebab 16px from the right, matching the
section rhythm of the rest of Money Home.