Support parsing dynamic repeats

[ruggi]

Problem:

Dynamic repeat functions in grid templates (e.g. repeat(auto-fill, ...) are not supported.

Fix:

1. Extend the repeat functions to allow supported keywords in the times parsing, so they are preserved when serializing templates
2. …but disable resizing templates that show them, because it can be impossible to derive their count from the computed style. We might revisit this in the future, though.

Fixes #6402

[github-actions]

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[relativeci]

#14337 Bundle Size — 62.67MiB (~+0.01%).

2a6c910(current) vs 916e8b9 master#14327(baseline)

Warning

Bundle contains 70 duplicate packages – View duplicate packages

Bundle metrics   2 changes 1 regression

	Current #14337	Baseline #14327
Initial JS	45.79MiB(~+0.01%)	45.79MiB
Initial CSS	0B	0B
Cache Invalidation	22.37%	21.75%
Chunks	30	30
Assets	33	33
Modules	4383	4383
Duplicate Modules	520	520
Duplicate Code	31.62%	31.62%
Packages	472	472
Duplicate Packages	70	70

Bundle size by type   2 changes 1 regression 1 improvement

	Current #14337	Baseline #14327
JS	62.66MiB (~+0.01%)	62.65MiB
HTML	11.12KiB (-0.32%)	11.16KiB

Bundle analysis report Branch feat/grid-auto-fill Project dashboard

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