fix renaming of page files, add handling of symlinked pages #32977

Job	Run time
Determine changes	9s
validate-docs-links	14s
build-native / build	4m 6s
build-next / build	28s
test unit (18) / build	4m 20s
test unit (20) / build	4m 13s
test next-swc wasi	0s
rustdoc check / build	2m 13s
rust check / build	2m 17s
test cargo unit / build	3m 16s
test next-swc wasm / build	4m 21s
types and precompiled	0s
Run devlow benchmarks	0s
lint	0s
test turbopack dev	0s
Test new tests for flakes (dev)	0s
test turbopack development integration	0s
test turbopack production	0s
test turbopack production integration	0s
Test new tests for flakes (prod)	0s
test dev	0s
test integration	0s
test firefox and safari	0s
test prod	0s
test ppr dev	0s
test ppr integration	0s
test ppr prod	0s
Test new tests when deployed	0s
report test results to datadog	3s
thank you, next	1s
	25m 41s

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