Release page show all tags in compare dropdown (#20070) (#20072)

Backport #20070 

Just get all tags when creating the compare dropdown.

Fix #19936

routers/web/repo/release.go

@@ -98,7 +98,14 @@ func releasesOrTags(ctx *context.Context, isTagList bool) {
 		listOptions.PageSize = setting.API.MaxResponseItems
 	}
 
-	tags, err := ctx.Repo.GitRepo.GetTags(listOptions.GetStartEnd())
+	// TODO(20073) tags are used for compare feature witch needs all tags
+	// filtering is doen at the client side atm
+	tagListStart, tagListEnd := 0, 0
+	if isTagList {
+		tagListStart, tagListEnd = listOptions.GetStartEnd()
+	}
+
+	tags, err := ctx.Repo.GitRepo.GetTags(tagListStart, tagListEnd)
 	if err != nil {
 		ctx.ServerError("GetTags", err)
 		return