translation file uploads do not clear "needs editing" strings if upload has them emptied

### Describe the issue

I am working on Godot translations and I am trying to clear automatic translations as they are mostly wrong (since they are copied from a previous work by devs)

The total is already over 10k, and "needs editing" strings are quite an attention killer for me. So, when an update comes in, I usually clear them all before continuing translating.

Since Weblate does not have such an editing tools (or I could not discover yet?), I download the po file, batch clear fuzzy strings with regex, and upload the file back with these options:
- Add as translation
- Import as translated
- Change translated and approved strings

I might have forgotten how things worked since I had my last batch many months ago, but I remember these option would replace everything on Weblate with my uploaded file.

Yet, today I am having difficulty with those nasty strings. The uploads comes with this message, saying no change applied on them:
> Processed 24568 strings from the uploaded files (skipped: 4666, not found: 0, updated: 0).

For the moment, I replaced them all with a single space character, `msgstr " "`, as it is better to have nothing than having wrong information.

Please, correct this issue. I know this is dangerous action but those 3 options are meant for this (let alone along the uploading itself).

### I already tried

- [X] I've read and searched [the documentation](https://docs.weblate.org/).
- [X] I've searched for similar filed issues in this repository.

### Steps to reproduce the behavior

1- have a project with "needs editing" strings with po style content
2- download po file
3- change translation portions as `msgstr ""`and remove `fuzzy` line (makes it untranslated)
4- save and upload with options in the main text above.

### Expected behavior

all "needs editing" should be removed and there should be only "untranslated/unfinished" shown

### Screenshots

_No response_

### Exception traceback

_No response_

### How do you run Weblate?

weblate.org service

### Weblate versions

_No response_

### Weblate deploy checks

_No response_

### Additional context

_No response_