Update/DB migration from 10.2.3 to 10.3.1 - `disk I/O error: read-only file system`, if only `/var/lib/grafana` is writable (in AWS ECS)

### What happened? #### Setup / Environment for Grafana * We are running Grafana in AWS ECS as Container. * We using a Container "mountPoints" for the Container path `/var/lib/grafana`. Hence, the Container can write/delete/read files within this folder/subfolders (only). * Within AWS ECS we have the option "readonlyRootFilesystem" enabled. When this parameter is enabled, the container is given read-only access to its root file system. #### Issue Description If we switch the version of Grafana from version 10.2.3 (commit=1e84fede543acc892d2a2515187e545eb047f237 branch=HEAD compiled=2023-12-18T15:46:07Z) to new version version 10.3.1 (commit=00a22ff8b28550d593ec369ba3da1b25780f0a4a branch=HEAD compiled=2024-01-22T18:40:42Z) we see the following error (including a container-exit): ``` logger=settings t=2024-01-26T12:08:39.948640486Z level=info msg="Starting Grafana" version=10.3.1 commit=00a22ff8b28550d593ec369ba3da1b25780f0a4a branch=HEAD compiled=2024-01-22T18:40:42Z logger=settings t=2024-01-26T12:08:39.94891029Z level=info msg="Config loaded from" file=/usr/share/grafana/conf/defaults.ini logger=settings t=2024-01-26T12:08:39.948923828Z level=info msg="Config loaded from" file=/etc/grafana/grafana.ini logger=settings t=2024-01-26T12:08:39.949079071Z level=info msg="Path Home" path=/usr/share/grafana logger=settings t=2024-01-26T12:08:39.949084891Z level=info msg="Path Data" path=/var/lib/grafana logger=settings t=2024-01-26T12:08:39.949090853Z level=info msg="Path Logs" path=/var/log/grafana logger=settings t=2024-01-26T12:08:39.949096261Z level=info msg="Path Plugins" path=/var/lib/grafana/plugins logger=settings t=2024-01-26T12:08:39.949102087Z level=info msg="Path Provisioning" path=/etc/grafana/provisioning logger=settings t=2024-01-26T12:08:39.949107436Z level=info msg="App mode production" logger=sqlstore t=2024-01-26T12:08:39.94960476Z level=info msg="Connecting to DB" dbtype=sqlite3 logger=migrator t=2024-01-26T12:08:39.955959698Z level=info msg="Starting…