[Glitch] Fix text being incorrectly pre-selected in composer textarea on /share

Port 335049cc33 to glitch-soc

Signed-off-by: Claire <claire.github-309c@sitedethib.com>

app/javascript/flavours/glitch/features/compose/components/compose_form.js

@@ -58,6 +58,7 @@ class ComposeForm extends ImmutablePureComponent {
     onPickEmoji: PropTypes.func,
     showSearch: PropTypes.bool,
     anyMedia: PropTypes.bool,
+    isInReply: PropTypes.bool,
     singleColumn: PropTypes.bool,
 
     advancedOptions: ImmutablePropTypes.map,
@@ -233,7 +234,7 @@ class ComposeForm extends ImmutablePureComponent {
     //  Caret/selection handling.
     if (focusDate !== prevProps.focusDate) {
       switch (true) {
-      case preselectDate !== prevProps.preselectDate && preselectOnReply:
+      case preselectDate !== prevProps.preselectDate && this.props.isInReply && preselectOnReply:
         selectionStart = text.search(/\s/) + 1;
         selectionEnd = text.length;
         break;

app/javascript/flavours/glitch/features/compose/containers/compose_form_container.js

@@ -68,6 +68,7 @@ function mapStateToProps (state) {
     spoilersAlwaysOn: spoilersAlwaysOn,
     mediaDescriptionConfirmation: state.getIn(['local_settings', 'confirm_missing_media_description']),
     preselectOnReply: state.getIn(['local_settings', 'preselect_on_reply']),
+    isInReply: state.getIn(['compose', 'in_reply_to']) !== null,
   };
 };