perf(ui): eliminate speculative layout overhead from IntrinsicWidth in QueryaTabStrip

[ZhuchkaTriplesix]

Closes #1342

Summary of Changes

1. Conditional IntrinsicWidth via LayoutBuilder:
   • In QueryaTabStrip, wrapped the scrollable tab strip in a LayoutBuilder checking constraints.hasBoundedWidth.
   • When parent width constraints are bounded (e.g. inside Expanded / Flexible / SizedBox across SqlQueryTabBar, GenericTableView, ResultsTab, ErdView), IntrinsicWidth is bypassed completely, eliminating redundant (N)$ speculative layout passes on every frame and rebuild.
   • When parent constraints are unconstrained horizontally (e.g. unconstrained Row from fix(tabs): wrap QueryaTabStrip in horizontal scrollable and preserve GlobalKeys on tab count change #898), falls back to IntrinsicWidth to prevent unbounded flex scroll errors.
2. Tests:
   • Added unit tests in test/shared/querya_tab_strip_test.dart verifying that IntrinsicWidth is eliminated when parent width is bounded and retained as a fallback when unconstrained.