message: correctly inform connection of resize events
diff: @@ -100,6 +100,13 @@ namespace Microsoft.Terminal.Wpf
  internal void SetTheme(TerminalTheme theme, string fontFamily, short fontSize, int newDpi)
  {
  NativeMethods.TerminalSetTheme(this.terminal, theme, fontFamily, fontSize, newDpi);
  +
  + NativeMethods.TerminalTriggerResize(this.terminal, this.ActualWidth, this.ActualHeight, out var dimensions);
  +
  + this.Rows = dimensions.Y;
  + this.Columns = dimensions.X;
  +
  + this.connection?.Resize((uint)dimensions.Y, (uint)dimensions.X);
  }
  /// <summary>
  @@ -115,6 +122,7 @@ namespace Microsoft.Terminal.Wpf
  this.Rows = dimensions.Y;
  this.Columns = dimensions.X;
  + this.connection?.Resize((uint)dimensions.Y, (uint)dimensions.X);
  return (dimensions.Y, dimensions.X);
  }
  @@ -132,6 +140,11 @@ namespace Microsoft.Terminal.Wpf
  };
  NativeMethods.TerminalResize(this.terminal, dimensions);
  +
  + this.Rows = dimensions.Y;
  + this.Columns = dimensions.X;
  +
  + this.connection?.Resize((uint)dimensions.Y, (uint)dimensions.X);
  }
  /// <inheritdoc/>
  