Fix atomic fee refresh summaries

[carrion256]

Summary

• Merge the conditional RefreshFees EffectSummary produced by prepare_atomic_call into atomic withdraw/redeem summaries instead of discarding it.
• Keeps the atomic return values unchanged while preserving emitted/effect-summary accounting for fee mint effects once atomic paths are reachable.

Findings

• #FIND-030 / Nexus 908f798c-e000-4b30-b15c-4a162208a604
• A-027 / #FIND-028 is covered by the base PR's proxy-view truthfulness work; no extra code in this PR.

Verification

• cargo test -p templar-soroban-runtime test_atomic_withdraw_refreshes_fees -- --nocapture
• cargo test -p templar-soroban-runtime --lib -- --nocapture
• post-commit Soroban size-budget-check hook passed: 96709 bytes

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[carrion256]

fixed on #457