Don't display creating page button in a mirror wiki repository (go-gitea#24395)

A mirror repository with wiki is also a mirror. So creating page from UI
should be disabled. This PR hides the button like other places.

Author: lunny

templates/repo/settings/options.tmpl

@@ -157,7 +157,7 @@
 									</div>
 									{{end}}
 									<div class="field">
-										<button class="ui green button">{{$.locale.Tr "repo.settings.update_settings"}}</button>
+										<button class="ui green button">{{$.locale.Tr "repo.settings.update_mirror_settings"}}</button>
 									</div>
 								</form>
 							</td>

templates/repo/wiki/pages.tmpl

@@ -7,7 +7,7 @@
 				{{.locale.Tr "repo.wiki.pages"}}
 			</div>
 			<div>
-				{{if and .CanWriteWiki (not .IsRepositoryMirror)}}
+				{{if and .CanWriteWiki (not .Repository.IsMirror)}}
 					<a class="ui green small button" href="{{.RepoLink}}/wiki?action=_new">{{.locale.Tr "repo.wiki.new_page_button"}}</a>
 				{{end}}
 			</div>