Acceptance tests for dots in path

[PVince81]

See #26143 (comment)

[ownclouders]

GitMate.io thinks possibly related issues are #31579 (test), #22492 (test), #22485 (test), #33345 (Use new webDAV path in upload to share acceptance test), and #32347 (Add getters for private vars of acceptance test traits).

[phil-davis]

Looking at that linked comment and PR, we should cover upload/download/rename/delete for folder/file combinations like:

• folder and/or file ends with a dot /folder./file.
• folder has dot in the name /folder.1/file.txt
• folder and/or file has multiple dots /folder..1../file..name..
• folder and/or file is actually all dots (3 or more) /.../...
• folder and or file starts with dot (hidden files - we might already have those cases?)
• folder and or file starts with 2 dots /..folder/..file

And other unusual combinations that you think might cause trouble ;)