1.0.50: Update testnet to az-1/2

[cdrappi]

Note

Adds seismicTestnet1/seismicTestnet2 (az-1/az-2) and re-aliases seismicTestnet to seismicTestnet1; updates exports and bumps packages to 1.0.50.

• seismic-viem:
  • Chains:
    • Add seismicTestnet1 and seismicTestnet2 via createSeismicAzTestnet(1|2).
    • Change seismicTestnet alias to seismicTestnet1 (was seismicTestnet200).
    • Keep seismicTestnet200/seismicTestnet201 unchanged.
  • Exports: Re-export seismicTestnet1 and seismicTestnet2 in src/index.ts.
• Versioning:
  • Bump seismic-viem and seismic-react to 1.0.50 and update seismic-react peer dep to >=1.0.50.

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