Update angular monorepo to v21.2.6

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
@angular/compiler (source)	21.2.5 → 21.2.6
@angular/compiler-cli (source)	21.2.5 → 21.2.6

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Release Notes

angular/angular (@​angular/compiler)

v21.2.6

Compare Source

common

Commit	Type	Description
b4ab6ba2e8	fix	avoid redundant image fetch on destroy with auto sizes

compiler

Commit	Type	Description
880a57d4b3	fix	prevent shimCssText from adding extra blank lines per CSS comment

core

Commit	Type	Description
ad0156e056	fix	fixes a regression with animate.leave and reordering

migrations

Commit	Type	Description
73d6b01b47	fix	inject migration not work in multi-project workspace with option path

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