Add missing tabs to org projects page (#22705)

Fixes https://github.com/go-gitea/gitea/issues/22676

Context Data `IsOrganizationMember` and `IsOrganizationOwner` is used to
control the visibility of `people` and `team` tab.

2871ea0809/templates/org/menu.tmpl (L19-L40)

And because of the reuse of user projects page, User Context is changed
to Organization Context. But the value of `IsOrganizationMember` and
`IsOrganizationOwner` are not being given.

I reused func `HandleOrgAssignment` to add them to the ctx, but may have
some unnecessary variables, idk whether it is ok.

I found there is a missing `PageIsViewProjects` at create project page.

templates/org/menu.tmpl

@@ -3,16 +3,18 @@
 		<a class="{{if .PageIsViewRepositories}}active {{end}}item" href="{{$.Org.HomeLink}}">
 			{{svg "octicon-repo"}} {{.locale.Tr "user.repositories"}}
 		</a>
+		{{if and .IsProjectEnabled .CanReadProjects}}
 		<a class="{{if .PageIsViewProjects}}active {{end}}item" href="{{$.Org.HomeLink}}/-/projects">
 			{{svg "octicon-project-symlink"}} {{.locale.Tr "user.projects"}}
 		</a>
-		{{if .IsPackageEnabled}}
+		{{end}}
+		{{if and .IsPackageEnabled .CanReadPackages}}
 		<a class="item" href="{{$.Org.HomeLink}}/-/packages">
 			{{svg "octicon-package"}} {{.locale.Tr "packages.title"}}
 		</a>
 		{{end}}
-		{{if .IsRepoIndexerEnabled}}
-		<a class="{{if $.PageIsOrgCode}}active {{end}}item" href="{{$.Org.HomeLink}}/-/code">
+		{{if and .IsRepoIndexerEnabled .CanReadCode}}
+		<a class="item" href="{{$.Org.HomeLink}}/-/code">
 			{{svg "octicon-code"}}&nbsp;{{$.locale.Tr "org.code"}}
 		</a>
 		{{end}}