[stable32] fix: Reduce the mixups between apptokens and session ids

[backportbot]

Backport of #59758

[come-nc]

I’ve added getTokenFromPassword as in stable33 but I did not remove isTokenPassword as it’s a public function, just in case it’s used somewhere in a weird app.

[come-nc]

/backport to stable31

[come-nc]

/backport! to stable31

[backportbot]

The backport to stable31 failed. Please do this backport manually.

# Switch to the target branch and update it
git checkout stable31
git pull origin stable31

# Create the new backport branch
git checkout -b backport/59774/stable31

# Cherry pick the change from the commit sha1 of the change against the default branch
# This might cause conflicts, resolve them
git cherry-pick 310b488a

# Push the cherry pick commit to the remote repository and open a pull request
git push origin backport/59774/stable31

Error: Failed to create pull request: Validation Failed: {"resource":"PullRequest","code":"custom","message":"A pull request already exists for nextcloud:backport/59774/stable31."} - https://docs.github.com/rest/pulls/pulls#create-a-pull-request

---

Learn more about backports at https://docs.nextcloud.com/server/stable/go.php?to=developer-backports.