libheif: depend on shared-mime-info

Prior to this, libheif installed its `heif.xml` mime package file in
`/usr/local/share/mime` which conflicted with shared-mime-info if you
later wanted to install that package.

Closes #38047.

Signed-off-by: FX Coudert <fxcoudert@gmail.com>

Formula/libheif.rb

@@ -15,6 +15,7 @@ class Libheif < Formula
   depends_on "jpeg"
   depends_on "libde265"
   depends_on "libpng"
+  depends_on "shared-mime-info"
   depends_on "x265"
 
   def install
@@ -25,6 +26,10 @@ class Libheif < Formula
     pkgshare.install "examples/example.heic"
   end
 
+  def post_install
+    system Formula["shared-mime-info"].opt_bin/"update-mime-database", "#{HOMEBREW_PREFIX}/share/mime"
+  end
+
   test do
     output = "File contains 2 images"
     example = pkgshare/"example.heic"