chore(deps): update angular-cli monorepo to v21.2.6

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
@angular/build	21.2.5 → 21.2.6
@angular/cli	21.2.5 → 21.2.6

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Release Notes

angular/angular-cli (@​angular/build)

v21.2.6

Compare Source

@​angular/cli

Commit	Type	Description
ea14f28cc	fix	fix sourceRoot resolution for MCP projects tool

@​angular/build

Commit	Type	Description
9136eb376	fix	ensure transitive SCSS partial errors are tracked in watch mode
8186faa11	fix	ensure Vitest mock patching is executed only once
107d1a9e2	fix	preserve error stack traces during prerendering
b7f457253	fix	scope CHROME_BIN executable path to individual playwright instances

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