Adapt Scala3 prebuiltBinaries paths inside archives to the fixed layout in 3.6.0+

[WojciechMazur]

In 3.5 series the the paths inside the archives had incorrect layout that introduce 1 additional top-level directory. It was accidently fixed in 3.6 but coused incompatibility when installing native runnners.

tar -tvf scala3-3.6.2-RC3-aarch64-apple-darwin.tar.gz
drwxr-xr-x  0 root   root        0 Nov 28 17:03 ./
-rwxr--r--  0 root   root     2613 Nov 28 16:56 ./bin/scalac
-rwxr--r--  0 root   root     2094 Nov 28 16:56 ./bin/scaladoc
-rw-r--r--  0 root   root     2818 Nov 28 16:56 ./bin/scaladoc.bat
-rwxr--r--  0 root   root     1640 Nov 28 16:56 ./bin/scala
-rwxr--r--  0 root   root     1883 Nov 28 16:56 ./bin/scala_legacy
-rw-r--r--  0 root   root     1789 Nov 28 16:56 ./bin/scala.bat
-rw-r--r--  0 root   root     3200 Nov 28 16:56 ./bin/scalac.bat
-rw-r--r--  0 root   root       73 Nov 28 17:03 ./VERSION
...

tar -tvf scala3-3.5.2-aarch64-apple-darwin.tar.gz 
-rwxr-xr-x  0 root   root     2609 Oct 16 12:20 scala3-3.5.2-aarch64-apple-darwin/bin/scalac
-rwxr-xr-x  0 root   root      975 Oct 16 12:20 scala3-3.5.2-aarch64-apple-darwin/bin/common
-rwxr-xr-x  0 root   root     2090 Oct 16 12:20 scala3-3.5.2-aarch64-apple-darwin/bin/scaladoc
-rwxr-xr-x  0 root   root     1538 Oct 16 12:20 scala3-3.5.2-aarch64-apple-darwin/bin/common.bat
-rwxr-xr-x  0 root   root     2814 Oct 16 12:20 scala3-3.5.2-aarch64-apple-darwin/bin/scaladoc.bat
-rwxr-xr-x  0 root   root     1632 Oct 16 12:20 scala3-3.5.2-aarch64-apple-darwin/bin/scala
-rwxr-xr-x  0 root   root     1879 Oct 16 12:20 scala3-3.5.2-aarch64-apple-darwin/bin/scala_legacy
-rwxr-xr-x  0 root   root     1781 Oct 16 12:20 scala3-3.5.2-aarch64-apple-darwin/bin/scala.bat
...

[tgodzik]

Awesome, thanks!