regression in {url-href-flat} template variable

[adienakhmad]

Describe the bug
template variable {url-href-flat} and {url-protocol} contains colons e.g. https: in the rendered text when it should not, at least it used to not do that.

To Reproduce
Steps to reproduce the behavior:

1. Set the filename template to archives/{url-href-flat}_{time-ms}.{filename-extension}
2. Save any page
3. You get a file named https：_tmuxcheatsheet.com__1766629534709.html (notice the colon)

Expected behavior
A filename like this https__tmuxcheatsheet.com__1714886210483.html (without the colon) matching the example in the template variable documentation

Environment

• Browser: Firefox Extension v1.22.96, Safari

[gildas-lormeau]

Actually, recently SingleFile improved the support of some special characters like : by replacing them with alternatives in UTF-8 which look similar like ：. Today, you can customize this mapping only by modifying the options manually. For this, click on the second icon (or the first one if there is only one icon) next to the Options title in the the options page, update filenameReplacedCharacters and filenameReplacementCharacters by removing the ":", and "：", lines respectively, and save the options.