Revert all testing workflows to run unconditionally on PRs (#370)

Author: scotts

.github/workflows/cpp_tests.yaml

@@ -4,10 +4,6 @@ on:
   push:
     branches: [ main ]
   pull_request:
-    paths:
-      - src/torchcodec/*
-      - test/*
-      - .github/workflows/cpp_tests.yaml # self reference
 
 concurrency:
   group: unit-test${{ github.workflow }}-${{ github.ref == 'refs/heads/main' && github.run_number || github.ref }}

.github/workflows/docs.yaml

@@ -4,10 +4,6 @@ on:
   push:
     branches: [ main ]
   pull_request:
-    paths:
-      - src/torchcodec/*
-      - docs/*
-      - .github/workflows/docs.yaml # self reference
 
 permissions:
   id-token: write

.github/workflows/linux_cuda_wheel.yaml

@@ -2,12 +2,6 @@ name: Build and test Linux CUDA wheels
 
 on:
   pull_request:
-    paths:
-      - src/torchcodec/*
-      - benchmarks/*
-      - packaging/*
-      - test/*
-      - .github/workflows/linux_cuda_wheel.yaml # self reference
   push:
     branches:
       - nightly

.github/workflows/linux_wheel.yaml

@@ -2,11 +2,6 @@ name: Build and test Linux wheel
 
 on:
   pull_request:
-    paths:
-      - src/torchcodec/*
-      - packaging/*
-      - test/*
-      - .github/workflows/linux_wheel.yaml # self reference
   push:
     branches:
       - nightly

.github/workflows/macos_wheel.yaml

@@ -2,11 +2,6 @@ name: Build and test MacOS wheel
 
 on:
   pull_request:
-    paths:
-      - src/torchcodec/*
-      - packaging/*
-      - test/*
-      - .github/workflows/macos_wheel.yaml # self reference
   push:
     branches:
       - nightly