Fix identify for WMS client with json format

[elpaso]

Fix identify for WMS client with json format

Fixes #21735

Bonus track:
Respect number formatting in identify raster results

[backporting]

The backport to release-3_4 failed:

Commits ["c87833c807aed321f06e3cb4900315952b439398","a8844483d89fff54259dd12a8929954b57769d11"] could not be cherry-picked on top of release-3_4

To backport manually, run these commands in your terminal:

# Fetch latest updates from GitHub.
git fetch
# Create new working tree.
git worktree add .worktrees/backport release-3_4
# Navigate to the new directory.
cd .worktrees/backport
# Cherry-pick all the commits of this pull request and resolve the likely conflicts.
git cherry-pick c87833c807aed321f06e3cb4900315952b439398 a8844483d89fff54259dd12a8929954b57769d11
# Create a new branch with these backported commits.
git checkout -b backport-9879-to-release-3_4
# Push it to GitHub.
git push --set-upstream origin backport-9879-to-release-3_4
# Go back to the original working tree.
cd ../..
# Delete the working tree.
git worktree remove .worktrees/backport

Then, create a pull request where the base branch is release-3_4 and the compare/head branch is backport-9879-to-release-3_4.

[backporting]

The backport to release-3_6 failed:

Commits ["c87833c807aed321f06e3cb4900315952b439398","a8844483d89fff54259dd12a8929954b57769d11"] could not be cherry-picked on top of release-3_6

To backport manually, run these commands in your terminal:

# Fetch latest updates from GitHub.
git fetch
# Create new working tree.
git worktree add .worktrees/backport release-3_6
# Navigate to the new directory.
cd .worktrees/backport
# Cherry-pick all the commits of this pull request and resolve the likely conflicts.
git cherry-pick c87833c807aed321f06e3cb4900315952b439398 a8844483d89fff54259dd12a8929954b57769d11
# Create a new branch with these backported commits.
git checkout -b backport-9879-to-release-3_6
# Push it to GitHub.
git push --set-upstream origin backport-9879-to-release-3_6
# Go back to the original working tree.
cd ../..
# Delete the working tree.
git worktree remove .worktrees/backport

Then, create a pull request where the base branch is release-3_6 and the compare/head branch is backport-9879-to-release-3_6.