Fix outdated tmpl code (go-gitea#32953)

Some PRs were before tmpl ctx refactoring and used outdated code

Author: wxiaoguang

templates/package/metadata/arch.tmpl

@@ -1,4 +1,4 @@
 {{if eq .PackageDescriptor.Package.Type "arch"}}
-	{{range .PackageDescriptor.Metadata.Licenses}}<div class="item" title="{{$.locale.Tr "packages.details.license"}}">{{svg "octicon-law"}} {{.}}</div>{{end}}
+	{{range .PackageDescriptor.Metadata.Licenses}}<div class="item" title="{{ctx.Locale.Tr "packages.details.license"}}">{{svg "octicon-law"}} {{.}}</div>{{end}}
 	{{if .PackageDescriptor.Metadata.ProjectURL}}<div class="item">{{svg "octicon-link-external"}} <a href="{{.PackageDescriptor.Metadata.ProjectURL}}" target="_blank" rel="noopener noreferrer me">{{ctx.Locale.Tr "packages.details.project_site"}}</a></div>{{end}}
 {{end}}

templates/repo/issue/view_content/comments.tmpl

@@ -693,7 +693,7 @@
 		{{else if eq .Type 38}}
 			<div class="timeline-item event" id="{{.HashTag}}">
 				<span class="badge">{{svg "octicon-clock"}}</span>
-				{{template "shared/user/avatarlink" dict "Context" $.Context "user" .Poster}}
+				{{template "shared/user/avatarlink" dict "user" .Poster}}
 				<span class="text grey muted-links">
 					{{template "shared/user/authorlink" .Poster}}
 					{{$timeStr := .Content|TimeEstimateString}}