TimeRangeInput: Fix clear button type

[Clarity-89]

What this PR does / why we need it:
Add type='button' to the clear input button in TimeRangeInput to prevent the default submit behavior.

Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:

[grafanabot]

Drone build failed: https://drone.grafana.net/grafana/grafana-enterprise/36735

[JoaoSilvaGrafana]

Nice job 👏

[grafanabot]

The backport to v9.2.x failed:

The process '/usr/bin/git' failed with exit code 1

To backport manually, run these commands in your terminal:

# Fetch latest updates from GitHub
git fetch
# Create a new branch
git switch --create backport-56545-to-v9.2.x origin/v9.2.x
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x d332747c38aadd6e1e1bdccd8a5ca87454a62fe9
# Push it to GitHub
git push --set-upstream origin backport-56545-to-v9.2.x
git switch main
# Remove the local backport branch
git branch -D backport-56545-to-v9.2.x

Then, create a pull request where the base branch is v9.2.x and the compare/head branch is backport-56545-to-v9.2.x.