fix(ci): disambiguate concurrency groups across sibling reusable-CI callers

The group key ci-${{ github.workflow }}-${{ github.ref }} resolves
identically for every job in a caller workflow (github.workflow is the
caller's name in a reusable workflow), so repos calling two reusable CI
workflows from one ci.yaml (e.g. exec-aide python + typescript) had
their jobs cancel each other on every run.

Prefix each group with the reusable workflow's own filename and append
its distinguishing input (source-dirs / working-directory) so sibling
jobs get distinct groups while superseded runs of the same job still
cancel.

.github/workflows/ci-dotnet.yaml

@@ -25,7 +25,7 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 20
     concurrency:
-      group: ci-${{ github.workflow }}-${{ github.ref }}
+      group: ci-dotnet-${{ github.workflow }}-${{ github.ref }}-${{ inputs.working-directory }}
       cancel-in-progress: true
     defaults:
       run:

.github/workflows/ci-python-sam.yaml

@@ -49,7 +49,7 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 10
     concurrency:
-      group: ci-${{ github.workflow }}-${{ github.ref }}
+      group: ci-python-sam-${{ github.workflow }}-${{ github.ref }}-${{ inputs.source-dirs }}
       cancel-in-progress: true
     steps:
       - uses: actions/checkout@v6

.github/workflows/ci-typescript-cdk.yaml

@@ -61,7 +61,7 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 30
     concurrency:
-      group: ci-${{ github.workflow }}-${{ github.ref }}
+      group: ci-typescript-cdk-${{ github.workflow }}-${{ github.ref }}-${{ inputs.working-directory }}
       cancel-in-progress: true
     steps:
       - uses: actions/checkout@v6