fix: support delete non-urlencoded wiki page

[BLumia]

Related to issue #16122, this patch is a continuation of #16139.

This patch allows users to use the delete button to delete a wiki page with a non-urlencoded file name.

[codecov-commenter]

Codecov Report

Merging #16482 (ed8586a) into main (0393a57) will increase coverage by 1.19%.
The diff coverage is 47.93%.

@@            Coverage Diff             @@
##             main   #16482      +/-   ##
==========================================
+ Coverage   44.24%   45.43%   +1.19%     
==========================================
  Files         695      718      +23     
  Lines       82341    84200    +1859     
==========================================
+ Hits        36429    38254    +1825     
+ Misses      40014    39793     -221     
- Partials     5898     6153     +255     

Impacted Files	Coverage Δ
cmd/convert.go	0.00% <0.00%> (ø)
cmd/dump.go	0.91% <0.00%> (ø)
cmd/dump_repo.go	0.00% <0.00%> (ø)
cmd/generate.go	0.00% <0.00%> (ø)
cmd/hook.go	0.00% <0.00%> (ø)
cmd/mailer.go	0.00% <0.00%> (ø)
cmd/manager.go	0.00% <0.00%> (ø)
cmd/migrate.go	0.00% <0.00%> (ø)
cmd/migrate_storage.go	0.00% <0.00%> (ø)
cmd/restore_repo.go	0.00% <0.00%> (ø)
... and 317 more

---

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[6543]

@BLumia please send a backport :)

[BLumia]

@BLumia please send a backport :)

Done. see #16486 :)