Add missing tabs to org projects page (#22705) (#23412)

Backport #22705 by @yp05327

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.

https://github.com/go-gitea/gitea/blob/2871ea08096cba15546f357d0ec473734ee9d8be/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.

Co-authored-by: yp05327 <576951401@qq.com>

templates/user/overview/header.tmpl

@@ -22,15 +22,17 @@
 			<a class="item" href="{{.ContextUser.HomeLink}}">
 				{{svg "octicon-repo"}} {{.locale.Tr "user.repositories"}}
 			</a>
+			{{if and .IsProjectEnabled (or .ContextUser.IsIndividual (and .ContextUser.IsOrganization .CanReadProjects))}}
 			<a href="{{.ContextUser.HomeLink}}/-/projects" class="{{if .PageIsViewProjects}}active {{end}}item">
 				{{svg "octicon-project-symlink"}} {{.locale.Tr "user.projects"}}
 			</a>
-			{{if (not .UnitPackagesGlobalDisabled)}}
+			{{end}}
+			{{if and .IsPackageEnabled (or .ContextUser.IsIndividual (and .ContextUser.IsOrganization .CanReadPackages))}}
 				<a href="{{.ContextUser.HomeLink}}/-/packages" class="{{if .IsPackagesPage}}active {{end}}item">
 					{{svg "octicon-package"}} {{.locale.Tr "packages.title"}}
 				</a>
 			{{end}}
-			{{if .IsRepoIndexerEnabled}}
+			{{if and .IsRepoIndexerEnabled (or .ContextUser.IsIndividual (and .ContextUser.IsOrganization .CanReadCode))}}
 				<a href="{{.ContextUser.HomeLink}}/-/code" class="{{if .IsCodePage}}active {{end}}item">
 					{{svg "octicon-code"}} {{.locale.Tr "user.code"}}
 				</a>