fix(store): add Signal equal function for immutable object comparison

[mikezks]

PR Checklist

Please check if your PR fulfills the following requirements:

• The commit message follows our guidelines: https:/ngrx/platform/blob/master/CONTRIBUTING.md#commit
• Tests for the changes have been added (for bug fixes / features)
• Documentation has been added / updated (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

[x] Bugfix
[ ] Feature
[ ] Code style update (formatting, local variables)
[ ] Refactoring (no functional changes, no api changes)
[ ] Build related changes
[ ] CI related changes
[ ] Documentation content changes
[ ] Other... Please describe:

What is the current behavior?

All selectors created with store.selectSignal() fire on every global state change, even if the related state received no update.

Closes #3882

What is the new behavior?

If selector(this.state()) returns the same object reference the computed Signal does not trigger a value update anymore.

Does this PR introduce a breaking change?

[ ] Yes
[x] No

Other information

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[mikezks]

If fix is OK:

• Review @ngrx/component-store selectSignal() as well.

[markostanimirovic]

If fix is OK:

• Review @ngrx/component-store selectSignal() as well.

The same issue happens with ComponentStore.selectSignal. I'll create a PR for that by the end of the day.

[brandonroberts]

Thanks @mikezks!