epm play chromium-gost and yandex-browser: fix checking for the package from repo

play.d/chromium-gost.sh

@@ -7,8 +7,7 @@ DESCRIPTION="Chromium with GOST support from the official site"
 
 . $(dirname $0)/common.sh
 
-# TODO: use get_pkgvendor = "ALT Linux Team"
-if epm installed chromium-gost ; then
+if epm installed chromium-gost && [ "$(get_pkgvendor chromium-gost)" = "ALT Linux Team" ]  ; then
     echo "Package chromium-gost is already installed from ALT repository."
     exit 0
 fi

play.d/yandex-browser.sh

@@ -16,7 +16,7 @@ SUPPORTEDARCHES="x86_64"
 . $(dirname $0)/common.sh
 
 if epm installed $PKGNAME && [ "$(get_pkgvendor $PKGNAME)" = "YANDEX LLC" ] ; then
-    if [ "$(epm print field Vendor for package $PKGNAME)" = "Yandex Browser Team <browser@support.yandex.ru>" ] ; then
+    if [ "$(epm print field Packager for package $PKGNAME)" = "Yandex Browser Team <browser@support.yandex.ru>" ] ; then
         echo "Package $PKGNAME is already installed manually from https://browser.yandex.ru/."
     else
         echo "Package $PKGNAME is already installed from ALT repository."