Fix a bug returning 404 when display a single tag with no release

[lunny]

Partially caused by #29149

When use

releases, err := getReleaseInfos(ctx, &repo_model.FindReleasesOptions{
		ListOptions: db.ListOptions{Page: 1, PageSize: 1},
		RepoID:      ctx.Repo.Repository.ID,
		TagNames:    []string{ctx.Params("*")},
		// only show draft releases for users who can write, read-only users shouldn't see draft releases.
		IncludeDrafts: writeAccess,
	})

replace

release, err := repo_model.GetRelease(ctx, ctx.Repo.Repository.ID, ctx.Params("*"))

It missed IncludeTags: true,. That means this bug will be occupied only when the release is only a tag.

• Get the right tag record when it's not a release
• Display correct tag tab but not release tag when it's a tag.
• The button will bring the tag name to the new page when it's a single tag page
• the new page will automatically hide the release target inputbox when the tag name is pre filled. This should be backport to v1.21.

[KN4CK3R]

Could you have a look at the title too?

This does not look good for tags without release:

gitea/templates/repo/release/list.tmpl

Lines 20 to 30 in 850fc25

	<h4 class="release-list-title gt-word-break">
	<a href="{{$.RepoLink}}/releases/tag/{{$release.TagName | PathEscapeSegments}}">{{$release.Title}}</a>
	{{template "repo/commit_statuses" dict "Status" $info.CommitStatus "Statuses" $info.CommitStatuses "AdditionalClasses" "gt-df"}}
	{{if $release.IsDraft}}
	<span class="ui yellow label">{{ctx.Locale.Tr "repo.release.draft"}}</span>
	{{else if $release.IsPrerelease}}
	<span class="ui orange label">{{ctx.Locale.Tr "repo.release.prerelease"}}</span>
	{{else}}
	<span class="ui green label">{{ctx.Locale.Tr "repo.release.stable"}}</span>
	{{end}}
	</h4>

[lunny]

Could you have a look at the title too? This does not look good for tags without release:

gitea/templates/repo/release/list.tmpl

Lines 20 to 30 in 850fc25

	<h4 class="release-list-title gt-word-break">
	<a href="{{$.RepoLink}}/releases/tag/{{$release.TagName | PathEscapeSegments}}">{{$release.Title}}</a>
	{{template "repo/commit_statuses" dict "Status" $info.CommitStatus "Statuses" $info.CommitStatuses "AdditionalClasses" "gt-df"}}
	{{if $release.IsDraft}}
	<span class="ui yellow label">{{ctx.Locale.Tr "repo.release.draft"}}</span>
	{{else if $release.IsPrerelease}}
	<span class="ui orange label">{{ctx.Locale.Tr "repo.release.prerelease"}}</span>
	{{else}}
	<span class="ui green label">{{ctx.Locale.Tr "repo.release.stable"}}</span>
	{{end}}
	</h4>

Fixed in b7dc094

[wxiaoguang]

Not really LGTM (too many "if" tricks), but since there is a bug and the bug needs to be fixed.