handle edge case where versions have differing envs better + update changelog + lint

apps/frontend/src/pages/[type]/[id].vue

@@ -755,7 +755,7 @@
 					v-if="
 						currentMember &&
 						projectV3.side_types_migration_review_status === 'pending' &&
-						projectV3.environment?.length > 0 &&
+						projectV3.environment?.length === 1 &&
 						projectV3.environment[0] !== 'unknown'
 					"
 					type="warning"

apps/frontend/src/pages/[type]/[id]/settings/environment.vue

@@ -161,7 +161,7 @@ const messages = defineMessages({
 			</template>
 		</div>
 		<UnsavedChangesPopup
-			v-if="supportsEnvironment && hasPermission"
+			v-if="supportsEnvironment && hasPermission && projectV3?.environment?.length <= 1"
 			:original="saved"
 			:modified="current"
 			:saving="saving"

apps/frontend/src/pages/dashboard/projects.vue

@@ -457,7 +457,8 @@ if (user.value?.projects) {
 	user.value?.projectsV3?.forEach((project) => {
 		if (
 			project.side_types_migration_review_status === 'pending' &&
-			(project.project_types.includes('mod') || project.project_types.includes('modpack'))
+			(project.project_types.includes('mod') || project.project_types.includes('modpack')) &&
+			project.environment?.length === 1
 		) {
 			projectsWithMigrationWarning.value.push(project.id)
 		}