Bug 1912230 - shorten messaging to avoid truncation. r=android-reviewers,mcarare

The fullscreen messaging was getting slightly truncated after translation into some other languages, so the message has been expressed here in a slightly more concise way.

Differential Revision: https://phabricator.services.mozilla.com/D221123

UltraBlame original commit: cbfd8f13ada7739ef07dd4873cfd87e69e5c91d2

Author: marco-c

mobile/android/fenix/app/src/main/java/org/mozilla/fenix/browser/BaseBrowserFragment.kt

@@ -12349,7 +12349,7 @@ R
 .
 string
 .
-exit_fullscreen_with_gesture
+exit_fullscreen_with_gesture_short
 )
 backButtonString
 =
@@ -12359,7 +12359,7 @@ R
 .
 string
 .
-exit_fullscreen_with_back_button
+exit_fullscreen_with_back_button_short
 )
 GestureNavUtils
 )

mobile/android/fenix/app/src/main/res/values/strings.xml

@@ -49486,6 +49486,20 @@ name
 "
 exit_fullscreen_with_gesture
 "
+moz
+:
+removedIn
+=
+"
+132
+"
+tools
+:
+ignore
+=
+"
+UnusedResources
+"
 >
 To
 exit
@@ -49529,6 +49543,20 @@ name
 "
 exit_fullscreen_with_back_button
 "
+moz
+:
+removedIn
+=
+"
+132
+"
+tools
+:
+ignore
+=
+"
+UnusedResources
+"
 >
 To
 exit
@@ -49547,6 +49575,137 @@ string
 !
 -
 -
+Message
+shown
+to
+explain
+how
+to
+exit
+fullscreen
+mode
+when
+gesture
+navigation
+is
+enabled
+.
+-
+-
+>
+<
+!
+-
+-
+Localisation
+note
+:
+this
+text
+should
+be
+as
+short
+as
+possible
+max
+68
+chars
+-
+-
+>
+<
+string
+name
+=
+"
+exit_fullscreen_with_gesture_short
+"
+>
+Drag
+from
+top
+&
+amp
+;
+use
+back
+gesture
+to
+exit
+<
+/
+string
+>
+<
+!
+-
+-
+Message
+shown
+to
+explain
+how
+to
+exit
+fullscreen
+mode
+when
+using
+back
+button
+navigation
+.
+-
+-
+>
+<
+!
+-
+-
+Localisation
+note
+:
+this
+text
+should
+be
+as
+short
+as
+possible
+max
+68
+chars
+-
+-
+>
+<
+string
+name
+=
+"
+exit_fullscreen_with_back_button_short
+"
+>
+Drag
+from
+top
+&
+amp
+;
+press
+back
+to
+exit
+<
+/
+string
+>
+<
+!
+-
+-
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