Properly handle @group/package deps in nodejs-symlink-deps

Node packages can have dependencies of the for "@group/package" instead of just "package".
Calling symlink() (and thus os.symlink()) in such a case fails when there is no "@group" directory yet.

```
+ /usr/lib/rpm/nodejs-symlink-deps /usr/lib/node_modules

ERROR: the path for dependency "@babel/runtime" already exists

This could mean that bundled modules are being installed.  Bundled libraries are
forbidden in Fedora. For more information, see:
    <https://fedoraproject.org/wiki/Packaging:No_Bundled_Libraries>

It is generally reccomended to remove the entire "node_modules" directory in
%prep when it exists. For more information, see:
    <https://fedoraproject.org/wiki/Packaging:Node.js#Removing_bundled_modules>

If you have obtained permission from the Fedora Packaging Committee to bundle
libraries, please use `%nodejs_fixdep -r` in %prep to remove the dependency on
the bundled module. This will prevent an unnecessary dependency on the system
version of the module and eliminate this error.
error: Bad exit status from /var/tmp/rpm-tmp.nn3mkP (%install)
```

The reported error is misleading - the path does not exist yet, but it also can't be created.
os.symlink throws OSError in both cases.

The patch prevents the issue by calling os.makedirs on the group-part of the dependency if there is one.

Signed-off-by: Jan Staněk <jstanek@redhat.com>
Resolves: RHEL-121583

nodejs-symlink-deps

@@ -30,6 +30,8 @@ import shutil
 import sys
 
 def symlink(source, dest):
+    if os.path.sep in dest:
+        os.makedirs(os.path.dirname(dest), exist_ok=True)
     try:
         os.symlink(source, dest)
     except OSError: