Update angular monorepo to v21.0.4

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
@angular/compiler (source)	21.0.3 -> 21.0.4
@angular/compiler-cli (source)	21.0.3 -> 21.0.4

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Release Notes

angular/angular (@​angular/compiler)

v21.0.4

Compare Source

compiler

Commit	Type	Description
f901cc9eb32	perf	chain query creation instructions

compiler-cli

Commit	Type	Description
65297c62011	fix	expand type for native controls with a dynamic type

forms

Commit	Type	Description
f254ff4f2e0	feat	expose element on signal forms Field directive
5880fbc73c6	feat	redo the signal forms metadata API
55fc677cef4	fix	add signals for dirty, hidden, and pending states in custom controls
cbb10179c80	fix	allow resetting with empty string
bf1c12cd932	fix	memoize reads of child fields in signal forms (#​65802)
6d7475582f9	fix	Reuse key in parent in compat structure

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