video: Fix name of video files with unknown extensions

When the extension was unknown, the video file was being generated with two dots in the end (e.g.: 'video..webm'). This also created a side-effect of the system not being able to find the correspondent telemetry logs and leaving them behind when clearing the videos.

src/stores/video.ts

@@ -639,7 +639,7 @@ export const useVideoStore = defineStore('video', () => {
       updateLastProcessingUpdate(hash)
 
       debouncedUpdateFileProgress(info.fileName, 75, `Saving video file.`)
-      await videoStoringDB.setItem(`${info.fileName}.${extensionContainer || '.webm'}`, durFixedBlob ?? mergedBlob)
+      await videoStoringDB.setItem(`${info.fileName}.${extensionContainer || 'webm'}`, durFixedBlob ?? mergedBlob)
 
       updateLastProcessingUpdate(hash)