After update new files are not found

[geofranzi]

Under climate/views.py we use a global dictionary

tempfolders_content: dict[str, dict] = {}

which stores the direct access dictionaries on a per folder type basis that are returned as Json on request. To fix the issues, it was adapted:

• force_update with a lazy load, a folder in temp_folderscontent can explicitely be refreshed now, or if empty is refreshed automatically
• commented out single file updates for now (this is incosistent in the code, Issue will be linked here
• explicit filesize checks on all routes that want to process file data directly (TempResultFiles)

Important: Right now a generated file is not updated when refreshing the folder normally. It only shows after force update.

Coming adaptations:

• the folder bulk update for tempfolders_content is a mid-to-heavy operation and should be encapsuled inside FolderContentView so that no other routes can call it directly
• normalize the single and bulk updates for tempfolders_content so that no duplicate code exists
• re activate single file updates so that single file changes are persistently updated in tempfolders_content (Folder cache)
• adapt the bulk request with a simple time lock to prevent excessive refreshing