Cannot add multiple records to a record set through embedded query builder

[emenslin]

Describe the bug
On a record set if you try to add an existing record, then use the embedded query builder you can only select one record, if you select more than one the button is disabled. In 7.11.4 you can select multiple records at once.

To Reproduce
Steps to reproduce the behavior:

1. Create a new record set on any table
2. Press the add button in the top left
3. Select query builder
4. Add any field
5. Press Query
6. Try to select multiple results
7. See Select button is disabled

Expected behavior
Should be able to select multiple records

Screenshots
Main:

03-09_11.32.mp4

7.11.4:

03-09_11.34.mp4

Please fill out the following information manually:

• OS: Windows 11
• Browser: Chrome
• Specify 7 Version: 7.12
• Database Name: blankdbsetup2elizabeth20260302
• Collection name: geo
• User Name: spadmin
• URL: https://blankdbsetup2elizabeth20260302-main.test.specifysystems.org/specify/view/collectingevent/new/?recordsetid=7