internal(browser): Add Click action support to Browser Test Editor

[going-confetti]

Description

• Add basic support for the click action
• ⚠️ This PR doesn't implement any options just yet

How to Test

• Add a new "Click element" action
• Configure the locator
• Verify that the action appears in the generated script

Checklist

• I have performed a self-review of my code.
• I have added tests for my changes.
• I have commented on my code, particularly in hard-to-understand areas.

Related PR(s)/Issue(s)

---

Note

Medium Risk
Adds a new action type that affects browser test script generation and editor behavior; mistakes could produce incorrect or non-functional generated tests, though scope is limited and options are currently hardcoded.

Overview
Adds basic locator.click support end-to-end in the Browser Test Editor.

The editor can now create and edit a new “Click element” action (new ClickActionBody, menu item, and registry entry with icon) and uses a shared createDefaultLocatorOptions() helper for default locator initialization.

Code generation (convertActionsToTest in src/codegen/browser/test.ts) now converts locator.click actions into click test nodes with default left-button and no-modifier settings.

^{Reviewed by Cursor Bugbot for commit 21ab714. Bugbot is set up for automated code reviews on this repo. Configure here.}

[going-confetti]

As more actions get added, we'll need to use something better than a simple dropdown menu

[e-fisher]

LGTM 🚀