Unable to delete multiple sequences at once via right-click menu in Sequence mode

[Zhirnoff]

Description:
In Sequence mode, when multiple sequences are selected on the canvas, attempting to delete them via the right-click context menu does nothing. The "Delete" option is visible and clickable, but no sequences are removed.
However, when only one sequence is selected, deletion via right-click works as expected.

Steps to Reproduce

1. Switch to Sequence mode.
2. Create two or more sequences on the canvas.
3. Select multiple sequences.
4. Right-click on the selected area and choose "Delete".

Actual behavior
No sequences are deleted when multiple are selected.
Deletion works only when one sequence is selected.

Expected behavior
All selected sequences should be deleted when using the right-click menu.

Video

2025-04-03_11h06_52.mp4

Desktop:

• OS: Windows 11
• Browser Chrome
• Version 133.0.6943.127 (Official Build) (64-bit)

Ketcher version
[Version 3.3.0-rc.1]
Indigo version
[Version 1.31.0-rc.1]
This bug was found while testing: #6472