message: invert and rename changed to saveDisabled for clarity
diff: @@ -114,7 +114,7 @@ export default class EditMessageComposer extends React.Component {
  this._editorRef = null;
  this.state = {
  - changed: false,
  + saveDisabled: true,
  };
  }
  @@ -247,12 +247,12 @@ export default class EditMessageComposer extends React.Component {
  }
  _onChange = () => {
  - if (this.state.changed || !this._editorRef || !this._editorRef.isModified()) {
  + if (!this.state.saveDisabled || !this._editorRef || !this._editorRef.isModified()) {
  return;
  }
  this.setState({
  - changed: true,
  + saveDisabled: false,
  });
  };
  @@ -269,7 +269,7 @@ export default class EditMessageComposer extends React.Component {
  />
  <div className="mx_EditMessageComposer_buttons">
  <AccessibleButton kind="secondary" onClick={this._cancelEdit}>{_t("Cancel")}</AccessibleButton>
  - <AccessibleButton kind="primary" onClick={this._sendEdit} disabled={!this.state.changed}>
  + <AccessibleButton kind="primary" onClick={this._sendEdit} disabled={this.state.saveDisabled}>
  {_t("Save")}
  </AccessibleButton>
  </div>
  