Fix: CSS layer ordering and Tailwind utility conflicts

[r1chm8]

Summary

• Added missing bootstrap-override layer to CSS layer hierarchy
• Fixed Tailwind utility conflicts breaking Bootstrap styles
• Added layer declarations to additional stylesheets for consistency

Changes

Layer ordering fix

Added the bootstrap-override layer between bootstrap-components and components in the layer hierarchy. This ensures Bootstrap overrides have proper specificity above base Bootstrap components but below Tailwind utilities.

Tailwind utility conflict fix

Replaced @utility blocks with @source not inline() directives for container and collapse utilities. The previous approach using all: unset created active utilities that broke Bootstrap's .container and collapse component styles.

Stylesheet consistency

Added @layer declarations to loadingScreen.scss and thirdparty.scss to ensure consistent layer ordering across all entry points.