dev-util/google-antigravity: rename USE flag to webkit

Align with app-editors/vscode, which gates the same functionality via
USE=webkit.

Signed-off-by: Florian Albrechtskirchinger <falbrechtskirchinger@gmail.com>

dev-util/google-antigravity/google-antigravity-1.23.2.ebuild

@@ -34,7 +34,7 @@ S="${WORKDIR}"
 LICENSE="all-rights-reserved"
 SLOT="0"
 KEYWORDS="~amd64 ~arm64"
-IUSE="kerberos +ms-auth verify-sig"
+IUSE="kerberos verify-sig webkit"
 RESTRICT="bindist mirror strip"
 
 RDEPEND="
@@ -73,7 +73,7 @@ RDEPEND="
 	x11-libs/pango
 	x11-misc/xdg-utils
 	kerberos? ( app-crypt/mit-krb5 )
-	ms-auth? (
+	webkit? (
 		net-libs/libsoup:3.0
 		net-libs/webkit-gtk:4.1
 	)
@@ -137,6 +137,10 @@ src_install() {
 		rm -r "${AG_HOME}/resources/app/node_modules/kerberos" || die
 	fi
 
+	if ! use webkit; then
+		rm -r "${AG_HOME}/resources/app/extensions/microsoft-authentication" || die
+	fi
+
 	# Do we really need a separate MIME type for the same file?
 	sed -e "s|application/x-antigravity-workspace|application/x-code-workspace|g" -i \
 		usr/share/applications/*.desktop \

dev-util/google-antigravity/metadata.xml

@@ -5,9 +5,6 @@
     <email>falbrechtskirchinger@gmail.com</email>
     <name>Florian Albrechtskirchinger</name>
   </maintainer>
-  <use>
-    <flag name="ms-auth">Enable Microsoft Authentication</flag>
-  </use>
   <upstream>
     <changelog>https://antigravity.google/changelog</changelog>
   </upstream>