chore(descriptors): regenerate against current live-chain runtime

[Imod7]

Relates to #242

Description

Relates to #242

• Regenerates the bundled PAPI descriptors for the 7 chains that had drifted, so each pinned codeHash and its metadata match the live runtime again. This is the 6 chains flagged in chore(descriptors): runtime drift detected #242 plus devnet-individuality, which chore(descriptors): runtime drift detected #242 reported as unreachable but was reachable (and also drifted) at regeneration time.
• Also fixes the drift issue's "How to resolve" steps, which told people to run a command that does not actually refresh the metadata.

Changes

• packages/descriptors/.papi/metadata/*.scale (7 files) - Refreshed runtime metadata pulled from each live chain RPC.
• packages/descriptors/chains/*/.papi/polkadot-api.json (7 files) - Re-pinned each chain's codeHash to its live runtime. Genesis is unchanged.
• packages/descriptors/chains/*/generated/package.json (4 files) - Auto version bump for the chains whose generated bindings changed.
• pending-changesets/descriptors-runtime-refresh.md (new) - Changeset for a patch release of @parity/product-sdk-descriptors. Parked in pending-changesets/ so it does not publish until promoted to .changeset/.
• .github/workflows/product-sdk-descriptors-drift.yml - Corrected the auto-generated issue's "How to resolve" steps: use npx papi update from inside each chain dir (fetches live metadata and re-pins codeHash) instead of pnpm generate (rebuilds bindings from cached metadata only), plus a biome format and a pnpm check step.

[github-actions]

📦 Bundle size impact

Comparing 2026-07-19T18:04:59.777Z → 2026-07-19T18:05:00.983Z

	Package	Entry	Bundled before	Bundled after	Δ	Ship gzip Δ	Shake ratio
🟢	@parity/product-sdk	.	6.28 MB	6.32 MB	+37.1 KB (+0.6%)	0 B	0% (was 0%)
🟢	@parity/product-sdk	./chain	6.04 MB	6.08 MB	+37.1 KB (+0.6%)	0 B	0% (was 0%)
🟢	@parity/product-sdk	./cloud-storage	6.22 MB	6.25 MB	+37.1 KB (+0.6%)	0 B	3% (was 3%)
🟢	@parity/product-sdk	./core	6.28 MB	6.32 MB	+37.1 KB (+0.6%)	0 B	0% (was 0%)
🟢	@parity/product-sdk	./react	6.29 MB	6.33 MB	+37.1 KB (+0.6%)	0 B	0% (was 0%)
🟢	@parity/product-sdk-chain-client	.	6.04 MB	6.08 MB	+37.1 KB (+0.6%)	0 B	0% (was 0%)
🟢	@parity/product-sdk-cloud-storage	.	6.22 MB	6.25 MB	+37.1 KB (+0.6%)	0 B	3% (was 3%)
🟢	@parity/product-sdk-descriptors	./kusama-asset-hub	1018.2 KB	1.01 MB	+14.3 KB (+1.4%)	-15 B	17% (was 17%)
🟢	@parity/product-sdk-descriptors	./paseo-asset-hub	1021.7 KB	1021.1 KB	-646 B (-0.1%)	-3 B	17% (was 17%)
🟢	@parity/product-sdk-descriptors	./paseo-individuality	652.5 KB	657.6 KB	+5.1 KB (+0.8%)	+1 B	19% (was 19%)
🟢	@parity/product-sdk-descriptors	./polkadot-asset-hub	963.3 KB	981.7 KB	+18.4 KB (+1.9%)	-20 B	17% (was 17%)

Thresholds — warn: ≥10% or ≥5.0 KB · fail: ≥20% or ≥15.0 KB (bundled). Percentage only applies once the baseline is ≥ 10 KB.