chore(deps): align @Angular-devkit packages to 21.2.19 in devkit

Dependabot bumped @angular-devkit/build-angular to 21.2.19 but left
@angular-devkit/core, /schematics and /architect at 21.2.14. build-angular
then resolved a nested @angular-devkit/core copy, and devkit's tsc build
failed on incompatible Logger types between the two copies — the
preinstall step exited 1, so every CI job went red.

Align all @angular-devkit/* to 21.2.19. devkit builds again; the override
block is preserved and the build-angular esbuild path advances to 0.28.1.

Author: nabramovitz