Fix disable download button (go-gitea#20701)

Author: lunny

modules/context/context.go

@@ -224,7 +224,7 @@ func (ctx *Context) HTML(status int, name base.TplName) {
 	ctx.Data["TemplateLoadTimes"] = func() string {
 		return strconv.FormatInt(time.Since(tmplStartTime).Nanoseconds()/1e6, 10) + "ms"
 	}
-	if err := ctx.Render.HTML(ctx.Resp, status, string(name), ctx.Data); err != nil {
+	if err := ctx.Render.HTML(ctx.Resp, status, string(name), templates.BaseVars().Merge(ctx.Data)); err != nil {
 		if status == http.StatusInternalServerError && name == base.TplName("status/500") {
 			ctx.PlainText(http.StatusInternalServerError, "Unable to find status/500 template")
 			return

templates/repo/branch/list.tmpl

@@ -112,7 +112,7 @@
 												{{svg "octicon-git-branch"}}
 											</div>
 										{{end}}
-										{{if (not .IsDeleted)}}
+										{{if and (not .IsDeleted) (not $.DisableDownloadSourceArchives)}}
 											<div class="ui basic jump dropdown icon button tooltip" data-content="{{$.locale.Tr "repo.branch.download" (.Name)}}" data-position="top right">
 												{{svg "octicon-download"}}
 												<div class="menu">

templates/repo/home.tmpl

@@ -120,7 +120,7 @@
 					<div class="ui action tiny input" id="clone-panel">
 					{{template "repo/clone_buttons" .}}
 					{{template "repo/clone_script" .}}
-					{{if not .DisableDownloadSourceArchives}}
+					{{if not $.DisableDownloadSourceArchives}}
 						<button id="download-btn" class="ui basic small compact jump dropdown icon button tooltip" data-content="{{.locale.Tr "repo.download_archive"}}" data-position="top right">
 							{{svg "octicon-download"}}
 							<div class="menu">