Implement "Arbitrary Module Namespace Identifiers" #30088

Job	Run time
format	27s
browser-integration	1m 17s
lint	53s
smoke	53s
package-size	1m 34s
Test Node 22 on ubuntu-latest	9m 11s
typecheck	46s
Test Node 20 on ubuntu-latest	10m 50s
Test Node 18 on ubuntu-latest	11m 28s
Test Node 16 on ubuntu-latest	11m 54s
baselines	9m 56s
Test Node 14 on ubuntu-latest	11m 51s
misc	25s
Test Node 22 on windows-latest	10m 47s
self-check	1m 0s
Test Node 20 on windows-latest	12m 28s
Test Node 18 on windows-latest	13m 21s
Test Node 16 on windows-latest	13m 7s
Test Node 14 on windows-latest	13m 59s
Test Node 22 on macos-14	10m 53s
Test Node 20 on macos-14	7m 54s
Test Node 18 on macos-14	9m 17s
Test Node 16 on macos-14	8m 57s
Test Node * on ubuntu-latest with --no-bundle	11m 39s
	3h 4m 47s

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