screenshot filenames just replace `{index}` instead of properly formatting it.

[Snooz82]

screenshot paths with {index} in file name can not be created. {index} is always replaced by a number. Therefore it is not possible like in SL to double the braces and create a file with {index} in name.

the following code should fix it.

.venv/lib/python3.11/site-packages/Browser/keywords/browser_control.py:94

    def _get_screenshot_path(self, filename: str, fileType: str) -> Path:
        if Path(filename).is_absolute():
            directory = Path(filename).parent
            filename = Path(filename).stem
        else:
            directory = self.screenshots_output
        index = 0
        while True:
            index += 1
            indexed = self._format_path(filename, index)
            indexed_control = self._format_path(filename, sys.maxsize)
            path = directory / indexed
            if indexed == indexed_control or not path.with_suffix(f".{fileType}").is_file():
                return path
            
    def _format_path(self, file_path: str, index: int) -> str:
        class _SafeFormatter(dict):
            def __missing__(self, key):
                return f"{{{key}}}"
        return file_path.format_map(_SafeFormatter(index=index))