Fix Android release that generates a .aab file

Creating Android release generates a .aab file. The Build() function was
working with *.apk files only. So the AAB file was not copied and
triggered a SELinux error. The copy sh command failed also.

This commit fixes the problem by changing the pattern to match on copy,
and the package name using ".aab" suffix.

NOTE: it could be better to use filepath.Glob() to find files and use
os.Rename() instead.

internal/command/android.go

@@ -80,6 +80,7 @@ func (cmd *android) Build(image containerImage) (string, error) {
 	log.Info("[i] Packaging app...")
 
 	packageName := fmt.Sprintf("%s.apk", cmd.defaultContext.Name)
+	pattern := "*.apk"
 
 	err := prepareIcon(cmd.defaultContext, image)
 	if err != nil {
@@ -88,6 +89,8 @@ func (cmd *android) Build(image containerImage) (string, error) {
 
 	if cmd.defaultContext.Release {
 		err = fyneRelease(cmd.defaultContext, image)
+		packageName = fmt.Sprintf("%s.aab", cmd.defaultContext.Name)
+		pattern = "*.aab"
 	} else {
 		err = fynePackage(cmd.defaultContext, image)
 	}
@@ -101,8 +104,9 @@ func (cmd *android) Build(image containerImage) (string, error) {
 	// https://github.com/fyne-io/fyne/blob/v1.4.0/cmd/fyne/internal/mobile/build_androidapp.go#L297
 	// To avoid to duplicate the fyne tool sanitize logic here, the location of
 	// the dist package to move will be detected using a matching pattern
-	command := fmt.Sprintf("mv %q/*.apk %q",
+	command := fmt.Sprintf("mv %q/%s %q",
 		volume.JoinPathContainer(cmd.defaultContext.WorkDirContainer(), cmd.defaultContext.Package),
+		pattern,
 		volume.JoinPathContainer(cmd.defaultContext.TmpDirContainer(), image.ID(), packageName),
 	)