fix: simplify cancel-all.sh to parse workflow IDs directly

- Use jq string interpolation to output tab-separated id and name
- Parse with IFS instead of re-parsing JSON objects
- Increase limit to 1024 workflows

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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: ryichando

.github/workflows/scripts/cancel-all.sh

@@ -4,11 +4,9 @@
 # Review: Ryoichi Ando (ryoichi.ando@zozo.com)
 # License: Apache v2.0
 
-gh run list --json status,workflowName,databaseId --jq '.[] | select(.status=="in_progress" or .status=="queued")' |
-	while read -r run; do
-		id=$(echo "$run" | jq -r '.databaseId')
-		workflow_name=$(echo "$run" | jq -r '.workflowName')
-
-		echo "Canceling running workflow '$workflow_name' (#$id)"
-		gh run cancel $id
+gh run list --limit 1024 --json status,workflowName,databaseId \
+	-q '.[] | select(.status=="in_progress" or .status=="queued") | "\(.databaseId)\t\(.workflowName)"' |
+	while IFS=$'\t' read -r id workflow_name; do
+		echo "Canceling '$workflow_name' (#$id)"
+		gh run cancel "$id"
 	done