minor #21237 remove invalid redirection entry (xabbuh)

This PR was merged into the 6.4 branch.

Discussion
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remove invalid redirection entry

(hopefully) fixes #21236

Commits
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2f40c40 remove invalid redirection entry

Author: javiereguiluz

_build/redirection_map

@@ -570,7 +570,6 @@
 /frontend/encore/server-data /frontend/server-data
 /components/serializer /serializer
 /serializer/custom_encoder /serializer/encoders#serializer-custom-encoder
-/components/string /string
 /form/button_based_validation /form/validation_groups
 /form/data_based_validation /form/validation_groups
 /form/validation_group_service_resolver /form/validation_groups