Studio: fix Sonar tsx issues + remove stale studio build files

[dpfaffenbauer]

Summary

Cleanup pass on Pimcore Studio bundles addressing ~325 SonarCloud findings across .tsx files, plus removal of stale studio build artifacts.

Code fixes (111 .tsx files)

Rule	Description	Count
S3735	void operator removed (fire-and-forget promises)	~184
S6440	React Hook bugs — 5 conditional hooks moved before early returns, 1 rename (newUseDataQueryHelper → useNewDataQueryHelper)	6
S1128	Unused imports	15
S3863	Duplicate imports merged	10
S4325	Redundant ! non-null assertions / as any casts	19
S2933	Field readonly	7
S6481	Context Provider value wrapped in useMemo	3
S6759	Component props wrapped in Readonly<>	8
S7763	export from re-export pattern	9
S7764	window → globalThis	2
S7773	parseInt/isNaN → Number.parseInt/Number.isNaN	5
S7744	...(X ?? {}) → ...X	10
S1082	A11y: onKeyDown + role/tabIndex on click handlers	4
S1854	Dead t import in EntityDetail	1
S1874	Deprecated SaleTabProps removed from tab signatures, substr → substring	20
S6479	Stable list key in MessengerChart	1
S2486	Unused catch variable → anonymous catch	19
—	Real fix: error handling for floating customerCompanyApi.getEntityDetails(...) promises	2

Build artifacts

Removed 820 stale files in */Resources/public/studio/... that were no longer referenced.

Still open (not part of this PR)

~70 Sonar issues remain in tsx that need per-case domain review:

• S3358 (9) nested ternaries
• S6479 (10) array-index keys — need stable IDs
• S7735 (8) negated conditions — many idiomatic
• S6767 (13) unused PropType — interface design decision
• S4325 (4) as any with TS strict-mode risk
• Various S1854 (3), S6848 (4), S4144 (3), S3776 (3), misc S77xx/S6xxx

Test plan

• Build all bundle frontends and confirm no TS / lint errors
• Smoke-test:
  • Sale tabs (Invoice/Payment/Shipment/Detail/Correspondence) — state-change badges still trigger transitions, keyboard support works
  • Order/Cart/Quote detail widgets — loading + save still surface errors
  • Customer-to-Company assign flows — error toast appears when entity details fail
  • Exchange rates / voucher codes manager — error toasts on save/delete failure
  • Variant generator — error path
• Messenger chart bars are still clickable + tabbable
• No regressions in dynamic-types (Country/State/Currency/Carrier/Tax/Store re-exports)

[sonarqubecloud]

Quality Gate passed

Issues
17 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
13.1% Duplication on New Code

See analysis details on SonarQube Cloud