message: Remove the margin around extension blocks
diff: @@ -53,11 +53,13 @@ export class ExtensionBlockImpl implements Block {
  this.#extensionBlockBlock = new ExtensionBlockBlock(this, this.#bulkFileWrapper);
  this.#widget = Widget({
  + contentsMargins: 0,
  sizePolicy: {
  vertical: QSizePolicyPolicy.Minimum,
  horizontal: QSizePolicyPolicy.Maximum,
  },
  layout: this.#layout = BoxLayout({
  + contentsMargins: 0,
  direction: Direction.TopToBottom,
  children: []
  })
  