github.event_path cannot be passed through env var

Describe the bug
When passing ${{ github.event_path }} through as an environment variable, it ends up getting blanked out when trying to use the environment variable. The environment variable approach was previously working on v2.273.0, but appears to have broke in v2.273.1.

To Reproduce
Use the following workflow below.

name: event_path (manual trigger)
on:
  workflow_dispatch:
jobs:
  test:
    runs-on: 'ubuntu-latest'
    steps:
    # - name: Printing through context works
    #   run: |
    #     echo ${{ github.event_path }}
    - name: Printing through env var does not
      run: |
        echo $EVENT_PATH
      env:
        EVENT_PATH: ${{ github.event_path }}

Expected behavior
The value of ${{ github.event_path }} should be accessible as an environment variable.

Runner Version and Platform

Version of your runner? v2.273.1

OS of the machine running the runner? ubuntu-latest

Start by running the provided workflow on ubuntu-latest with runner v2.273.1 and compare its environment-variable behavior with v2.273.0. The issue is done when github.event_path remains available through EVENT_PATH as shown in the reproduction, with the direct context behavior still working.