fix: clippy, run context

[ratankaliani]

Use RunContext::Docker inside of the WitnessGenExecutor for mock mode.

[github-actions]

Metric	Value
Batch Start	21,119,130
Batch End	21,119,135
Witness Generation (seconds)	76
Execution Duration (seconds)	40
Total Instruction Count	1,190,027,387
Oracle Verify Cycles	285,036,192
Derivation Cycles	647,996,550
Block Execution Cycles	156,466,004
Blob Verification Cycles	118,152,445
Total SP1 Gas	1,411,662,057
Number of Blocks	6
Number of Transactions	57
Ethereum Gas Used	14,159,167
Cycles per Block	198,337,897
Cycles per Transaction	20,877,673
Transactions per Block	9
Gas Used per Block	2,359,861
Gas Used per Transaction	248,406
BN Pair Cycles	0
BN Add Cycles	0
BN Mul Cycles	0
KZG Eval Cycles	0
EC Recover Cycles	433,316