fix: re-enable content-length header via htaccess

[szaimen]

Close #47017
Close nextcloud/all-in-one#5119

# Apache disabled the sending of the server-side content-length header 
# in their 2.4.59 patch updated which breaks some use-cases in Nextcloud.
# Setting ap_trust_cgilike_cl allows to bring back the usual behaviour.
# See https://bz.apache.org/bugzilla/show_bug.cgi?id=68973

[szaimen]

/backport to stable30

[szaimen]

/backport to stable29

[szaimen]

/backport to stable28

[provokateurin]

@skjnldsv do you know what's going on with the backport bot? The diff of this PR is clearly not the cause

[skjnldsv]

/backport to stable30

[backportbot]

The backport to stable30 failed. Please do this backport manually.

# Switch to the target branch and update it
git checkout stable30
git pull origin stable30

# Create the new backport branch
git checkout -b backport/47598/stable30

# Cherry pick the change from the commit sha1 of the change against the default branch
# This might cause conflicts, resolve them
git cherry-pick 3739fb7a

# Push the cherry pick commit to the remote repository and open a pull request
git push origin backport/47598/stable30

Error: Failed to clone repository: Failed to checkout branches: error: Your local changes to the following files would be overwritten by checkout:
dist/3794-3794.js.map.license
dist/4546-4546.js.map.license
dist/4696-4696.js.map.license
dist/5643-5643.js.map.license
dist/583-583.js.map.license
dist/9972-9972.js.map.license
Please commit your changes or stash them before you switch branches.
Aborting

---

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

[skjnldsv]

/backport to stable30

[backportbot]

The backport to stable30 failed. Please do this backport manually.

# Switch to the target branch and update it
git checkout stable30
git pull origin stable30

# Create the new backport branch
git checkout -b backport/47598/stable30

# Cherry pick the change from the commit sha1 of the change against the default branch
# This might cause conflicts, resolve them
git cherry-pick 3739fb7a

# Push the cherry pick commit to the remote repository and open a pull request
git push origin backport/47598/stable30

Error: Failed to clone repository: Failed to checkout branches: error: Your local changes to the following files would be overwritten by checkout:
dist/3794-3794.js.map.license
dist/4546-4546.js.map.license
dist/4696-4696.js.map.license
dist/5643-5643.js.map.license
dist/583-583.js.map.license
dist/9972-9972.js.map.license
Please commit your changes or stash them before you switch branches.
Aborting

---

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

[skjnldsv]

/backport to stable30

[szaimen]

/backport to stable29

[szaimen]

/backport to stable28

[solracsf]

Sorry for the late review.
This has been removed by apache for security reasons.
I don't know if enabling it server wide (and not targeting .php files only) could be a security issue or not.

See this for more details: https://www.suse.com/fr-fr/support/kb/doc/?id=000021486

[provokateurin]

This was already discussed in the company's security chat and reviews and approvals were based on that discussion.