[MD] Add explicit no spellcheck on password fields

Signed-off-by: Kristen Tian <tyarong@amazon.com>

CHANGELOG.md

@@ -12,6 +12,7 @@ Inspired from [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 
 - [Legacy Maps Plugin] Prevent reverse-tabnabbing ([#2540](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/2540))
 - Eliminate dependency on `got` versions older than 11.8.5 ([#2801](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/2801))
+- [Multi DataSource] Add explicit no spellcheck on password fields ([#2818](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/2818))
 
 ### 📈 Features/Enhancements
 

src/plugins/data_source_management/public/components/create_data_source_wizard/components/create_form/create_data_source_form.tsx

@@ -276,6 +276,7 @@ export class CreateDataSourceForm extends React.Component<
             value={this.state.auth.credentials.password || ''}
             onChange={this.onChangePassword}
             onBlur={this.validatePassword}
+            spellCheck={false}
             data-test-subj="createDataSourceFormPasswordField"
           />
         </EuiFormRow>

src/plugins/data_source_management/public/components/edit_data_source/components/edit_form/edit_data_source_form.tsx

@@ -585,6 +585,7 @@ export class EditDataSourceForm extends React.Component<EditDataSourceProps, Edi
                     : this.state.auth.credentials.password
                 }
                 isInvalid={!!this.state.formErrorsByField.createCredential?.password?.length}
+                spellCheck={false}
                 onChange={this.onChangePassword}
                 onBlur={this.validatePassword}
                 disabled={this.props.existingDataSource.auth.type !== AuthType.NoAuth}

src/plugins/data_source_management/public/components/edit_data_source/components/update_password_modal/update_password_modal.tsx

@@ -125,6 +125,7 @@ export const UpdatePasswordModal = ({
                 type={'dual'}
                 value={newPassword}
                 isInvalid={!isNewPasswordValid}
+                spellCheck={false}
                 onChange={(e) => setNewPassword(e.target.value)}
                 onBlur={validateNewPassword}
               />
@@ -149,6 +150,7 @@ export const UpdatePasswordModal = ({
                 type={'dual'}
                 value={confirmNewPassword}
                 isInvalid={!!isConfirmNewPasswordValid.length}
+                spellCheck={false}
                 onChange={(e) => setConfirmNewPassword(e.target.value)}
                 onBlur={validateConfirmNewPassword}
               />