Revert Inline Entity Form back to 8.x-1.0-rc15 and keep needed patches

Facing issues with "Add existing item" or "Add existing node"
❌ Automated unit/functional testing coverage

  @javascript @init @tools @local @development @staging
  Scenario: Add Test content N1, N2, N3 nodes to the Test Queue entityqueue
    Given I am a logged in user with the "webmaster" user
    When I go to "/admin/structure/entityqueue"
    And I wait
    Then I should see "Test Queue"
    When I click "Edit items" in the "Test Queue" row
    And I wait
    Then I should see "Edit subqueue Test Queue"
    When I press "Add existing item"
      Button with id|name|title|alt|value "Add existing item" not found. 

Reverting Inline Entity Form back to 2.0.0-rc2 and keeping needed patches

Had a regression issues after the update to 2.0.0-rc4
Back to ❌ Testing to ensure no regression

✅ Released varbase_core-9.0.57 →

✅ Released varbase_core-10.0.0-alpha3 →

✅ Released varbase-10.0.0-alpha1 →

✅ Released varbase-10.0.0-alpha1 →

Automatically closed - issue fixed for 2 weeks with no activity.

✅ Released varbase-9.0.14 →