enhance(backend): Improve behavior of correctFilename (#11484)

* enhance(backend): Improve behavior of correctFilename

* ✌️

* 未知のファイル形式かつ拡張子がある場合は何もしない

* ✌️

* .ext

---------

Co-authored-by: syuilo <Syuilotan@yahoo.co.jp>

pnpm-lock.yaml

@@ -358,7 +358,7 @@ importers:
         version: 2.1.0
       summaly:
         specifier: github:misskey-dev/summaly
-        version: github.com/misskey-dev/summaly/089a0ad8e8c780e5c088b1c528aa95c5827cbdcc
+        version: github.com/misskey-dev/summaly/d2d8db49943ccb201c1b1b283e9d0a630519fac7
       systeminformation:
         specifier: 5.18.9
         version: 5.18.9
@@ -997,7 +997,7 @@ importers:
         version: github.com/misskey-dev/storybook-addon-misskey-theme/cf583db098365b2ccc81a82f63ca9c93bc32b640(@storybook/blocks@7.0.27)(@storybook/components@7.1.0)(@storybook/core-events@7.0.27)(@storybook/manager-api@7.0.27)(@storybook/preview-api@7.0.27)(@storybook/theming@7.0.27)(@storybook/types@7.0.27)(react-dom@18.2.0)(react@18.2.0)
       summaly:
         specifier: github:misskey-dev/summaly
-        version: github.com/misskey-dev/summaly/089a0ad8e8c780e5c088b1c528aa95c5827cbdcc
+        version: github.com/misskey-dev/summaly/d2d8db49943ccb201c1b1b283e9d0a630519fac7
       vite-plugin-turbosnap:
         specifier: 1.0.2
         version: 1.0.2
@@ -5345,7 +5345,7 @@ packages:
     hasBin: true
     requiresBuild: true
     dependencies:
-      detect-libc: 2.0.1
+      detect-libc: 2.0.2
       https-proxy-agent: 5.0.1
       make-dir: 3.1.0
       node-fetch: 2.6.11
@@ -11496,13 +11496,6 @@ packages:
     engines: {node: '>=8'}
     dev: true
 
-  /detect-libc@2.0.1:
-    resolution: {integrity: sha512-463v3ZeIrcWtdgIg6vI6XUncguvr2TnGl4SzDXinkt9mSLpBJKXT3mW6xT3VQdDN11+WVs29pgvivTc4Lp8v+w==}
-    engines: {node: '>=8'}
-    requiresBuild: true
-    dev: false
-    optional: true
-
   /detect-libc@2.0.2:
     resolution: {integrity: sha512-UX6sGumvvqSaXgdKGUsgZWqcUyIXZ/vZTrlRT/iobiKhGL0zL4d3osHj3uqllWJK+i+sixDS/3COVEOFbupFyw==}
     engines: {node: '>=8'}
@@ -22129,8 +22122,8 @@ packages:
       react-dom: 18.2.0(react@18.2.0)
     dev: true
 
-  github.com/misskey-dev/summaly/089a0ad8e8c780e5c088b1c528aa95c5827cbdcc:
-    resolution: {tarball: https://codeload.github.com/misskey-dev/summaly/tar.gz/089a0ad8e8c780e5c088b1c528aa95c5827cbdcc}
+  github.com/misskey-dev/summaly/d2d8db49943ccb201c1b1b283e9d0a630519fac7:
+    resolution: {tarball: https://codeload.github.com/misskey-dev/summaly/tar.gz/d2d8db49943ccb201c1b1b283e9d0a630519fac7}
     name: summaly
     version: 4.0.2
     dependencies: