In the `for` loop, the value of `membershipsToAdd[org]` and
`membershipsToRemove[org]` is a slice that should be appended instead of
overwritten.
Due to the current overwrite, the LDAP group sync only matches the last
group at the moment.

## Example reproduction
- an LDAP user is both a member of
`cn=admin_staff,ou=people,dc=planetexpress,dc=com` and
`cn=ship_crew,ou=people,dc=planetexpress,dc=com`.
- configuration of `Map LDAP groups to Organization teams ` in
`Authentication Sources`:
```json
{
    "cn=admin_staff,ou=people,dc=planetexpress,dc=com":{
        "test_organization":[
            "admin_staff",
            "test_add"
        ]
    },
    "cn=ship_crew,ou=people,dc=planetexpress,dc=com":{
        "test_organization":[
            "ship_crew"
        ]
}
```
- start `Synchronize external user data` task in the `Dashboard`.
- the user was only added for the team `test_organization.ship_crew`

* upstream/main:
  Add popup to hashed comments/pull requests/issues in file editing/adding preview tab (go-gitea#24040)
  Use reactive store to share data between components (go-gitea#23996)
  [skip ci] Updated translations via Crowdin
  Fix accidental overwriting of LDAP team memberships (go-gitea#24050)
  Add cardtype to org/user level project on creation, edit and view (go-gitea#24043)
  Fix branch protection priority (go-gitea#24045)
  Update documentation to explain which projects allow Gitea to host static pages (go-gitea#23993)
  Fix date  display bug (go-gitea#24047)
  Fine tune markdown editor toolbar (go-gitea#24046)
  Add tooltips for MD editor buttons and add `muted` class for buttons (go-gitea#23896)
  Prefer native parser for SSH public key parsing (go-gitea#23798)

Backport #24050 by @sillyguodong

In the `for` loop, the value of `membershipsToAdd[org]` and
`membershipsToRemove[org]` is a slice that should be appended instead of
overwritten.
Due to the current overwrite, the LDAP group sync only matches the last
group at the moment.

## Example reproduction
- an LDAP user is both a member of
`cn=admin_staff,ou=people,dc=planetexpress,dc=com` and
`cn=ship_crew,ou=people,dc=planetexpress,dc=com`.
- configuration of `Map LDAP groups to Organization teams ` in
`Authentication Sources`:
```json
{
    "cn=admin_staff,ou=people,dc=planetexpress,dc=com":{
        "test_organization":[
            "admin_staff",
            "test_add"
        ]
    },
    "cn=ship_crew,ou=people,dc=planetexpress,dc=com":{
        "test_organization":[
            "ship_crew"
        ]
}
```
- start `Synchronize external user data` task in the `Dashboard`.
- the user was only added for the team `test_organization.ship_crew`

Co-authored-by: sillyguodong <33891828+sillyguodong@users.noreply.github.com>