add register import meta placeholder

[wenerme]

No description provided.

[github-actions]

File size impact

Merging register-meta into main will impact 4 files in 3 groups.

browser (2/2)

File	raw	gzip	brotli	Event
dist/s.min.js	+13 (7,789)	+9 (3,078)	+10 (2,794)	modified
dist/system.min.js	+13 (12,123)	+8 (4,676)	+5 (4,203)	modified
Total size impact	+26 (19,912)	+17 (7,754)	+15 (6,997)

node (1/1)

File	raw	gzip	brotli	Event
dist/system-node.cjs	+81 (518,903)	+24 (125,276)	-158 (84,011)	modified
Total size impact	+81 (518,903)	+24 (125,276)	-158 (84,011)

extras (1/8)

File	raw	gzip	brotli	Event
dist/extras/named-register.min.js	+4 (997)	+3 (467)	+4 (403)	modified
Total size impact	+4 (997)	+3 (467)	+4 (403)

_{Generated by file size impact during size-impact#3181252965}