feat(editor): remove embed iframe feature flag (#11432)

Close [BS-3019](https://linear.app/affine-design/issue/BS-3019/remove-embed-iframe-feature-flag)

blocksuite/affine/blocks/block-embed/src/embed-iframe-block/configs/slash-menu/slash-menu.ts

@@ -1,5 +1,4 @@
 import { getSelectedModelsCommand } from '@blocksuite/affine-shared/commands';
-import { FeatureFlagService } from '@blocksuite/affine-shared/services';
 import type { SlashMenuConfig } from '@blocksuite/affine-widget-slash-menu';
 import { EmbedIcon } from '@blocksuite/icons/lit';
 
@@ -17,12 +16,8 @@ export const embedIframeSlashMenuConfig: SlashMenuConfig = {
         caption: 'Embed',
       },
       group: '4_Content & Media@5',
-      when: ({ model, std }) => {
-        const featureFlagService = std.get(FeatureFlagService);
-        return (
-          featureFlagService.getFlag('enable_embed_iframe_block') &&
-          model.doc.schema.flavourSchemaMap.has('affine:embed-iframe')
-        );
+      when: ({ model }) => {
+        return model.doc.schema.flavourSchemaMap.has('affine:embed-iframe');
       },
       action: ({ std }) => {
         std.command

blocksuite/affine/blocks/block-embed/src/embed-iframe-block/embed-edgeless-iframe-block.ts

@@ -1,7 +1,6 @@
 import { EdgelessLegacySlotIdentifier } from '@blocksuite/affine-block-surface';
 import { Bound } from '@blocksuite/global/gfx';
 import { toGfxBlockComponent } from '@blocksuite/std';
-import { nothing } from 'lit';
 import { styleMap } from 'lit/directives/style-map.js';
 import { html } from 'lit/static-html.js';
 
@@ -36,10 +35,6 @@ export class EmbedEdgelessIframeBlockComponent extends toGfxBlockComponent(
   }
 
   override renderGfxBlock() {
-    if (!this.isEmbedIframeBlockEnabled) {
-      return nothing;
-    }
-
     const bound = Bound.deserialize(this.model.props.xywh$.value);
     const scale = this.model.props.scale$.value;
     const width = bound.w / scale;

blocksuite/affine/blocks/block-embed/src/embed-iframe-block/embed-iframe-block.ts

@@ -8,7 +8,6 @@ import type { EmbedIframeBlockModel } from '@blocksuite/affine-model';
 import {
   type EmbedIframeData,
   EmbedIframeService,
-  FeatureFlagService,
   type IframeOptions,
   LinkPreviewerService,
   NotificationProvider,
@@ -23,7 +22,7 @@ import {
   type ReadonlySignal,
   signal,
 } from '@preact/signals-core';
-import { html, nothing } from 'lit';
+import { html } from 'lit';
 import { query } from 'lit/decorators.js';
 import { type ClassInfo, classMap } from 'lit/directives/class-map.js';
 import { ifDefined } from 'lit/directives/if-defined.js';
@@ -106,12 +105,6 @@ export class EmbedIframeBlockComponent extends CaptionedBlockComponent<EmbedIfra
     return matchModels(this.model.parent, [SurfaceBlockModel]);
   }
 
-  get isEmbedIframeBlockEnabled() {
-    const featureFlagService = this.doc.get(FeatureFlagService);
-    const flag = featureFlagService.getFlag('enable_embed_iframe_block');
-    return flag ?? false;
-  }
-
   get _horizontalCardHeight(): number {
     switch (this.status$.value) {
       case 'idle':
@@ -420,10 +413,6 @@ export class EmbedIframeBlockComponent extends CaptionedBlockComponent<EmbedIfra
   }
 
   override renderBlock() {
-    if (!this.isEmbedIframeBlockEnabled) {
-      return nothing;
-    }
-
     const containerClasses = classMap({
       'affine-embed-iframe-block-container': true,
       ...this.selectedStyle$?.value,

blocksuite/affine/blocks/block-embed/src/embed-iframe-block/utils.ts

@@ -1,7 +1,4 @@
-import {
-  EmbedIframeService,
-  FeatureFlagService,
-} from '@blocksuite/affine-shared/services';
+import { EmbedIframeService } from '@blocksuite/affine-shared/services';
 import type { BlockStdScope } from '@blocksuite/std';
 
 /**
@@ -73,8 +70,6 @@ export function safeGetIframeSrc(htmlString: string): string | undefined {
  * @returns Whether the url can be embedded as an iframe
  */
 export function canEmbedAsIframe(std: BlockStdScope, url: string) {
-  const featureFlag = std.get(FeatureFlagService);
-  const isEmbedIframeEnabled = featureFlag.getFlag('enable_embed_iframe_block');
   const embedIframeService = std.get(EmbedIframeService);
-  return isEmbedIframeEnabled && embedIframeService.canEmbed(url);
+  return embedIframeService.canEmbed(url);
 }