Only strip suffix of file if an extension is added (#1764)

Author: Mikey032

db/files.ts

@@ -93,7 +93,8 @@ export const createFile = async (
 ) => {
   let validFilename = fileRecord.name.replace(/[^a-z0-9.]/gi, "_").toLowerCase()
   const extension = file.name.split(".").pop()
-  const baseName = validFilename.substring(0, validFilename.lastIndexOf("."))
+  const extensionIndex = validFilename.lastIndexOf(".")
+  const baseName = validFilename.substring(0, (extensionIndex < 0) ? undefined : extensionIndex)
   const maxBaseNameLength = 100 - (extension?.length || 0) - 1
   if (baseName.length > maxBaseNameLength) {
     fileRecord.name = baseName.substring(0, maxBaseNameLength) + "." + extension