Symbolic links not created when applying an errata kernel

Issue

• Symbolic links not created when applying an errata kernel
• After installing RHEL8.1.z errata kernel on a RHEL8.2(GA kernel) system, symbolic links to outbox drivers were not created unexpectedly.

1. Install RHEL8.2(kernel:4.18.0-193.el8.x86_64).
2. Install the following outbox drivers based on DUP (Driver Update Packages) model.
   - xxxxxx_yyyy.ko for RHEL8.1 and RHEL8.2
   - xxxxxx.ko for RHEL8.1 (dependent on xxxxxx_yyyy.ko)
   - xxxxxx.ko for RHEL8.2 (dependent on xxxxxx_yyyy.ko)
3. Install RHEL8.1.z kernel (4.18.0-147.8.1.el8_1.x86_64)

Expected Results:
 - A symbolic link to /usr/lib/modules/4.18.0-147.el8.x86_64/extra/xxxxxx/xxxxxx_yyyy.ko
   should be created at /usr/lib/modules/4.18.0-147.8.1.el8_1.x86_64/weak-updates/xxxxxx/xxxxxx_yyyy.ko
 - A symbolic link to /usr/lib/modules/4.18.0-147.el8.x86_64/extra/xxxxxx/xxxxxx.ko
   should be created at /usr/lib/modules/4.18.0-147.8.1.el8_1.x86_64/weak-updates/xxxxxx/xxxxxx.ko

Actual Results:
 - No symbolic link was created at /usr/lib/modules/4.18.0-147.8.1.el8_1.x86_64/weak-updates/

• A system has been installed a kernel driver for 2 versions, RHEL8.1 and RHEL8.2, and its kernel version is 4.18.0-147.el8 (RHEL8.1). On the system, upgrading kernel to 8.1.z causes this issue.