Fix crash in CorelliumAdapter::BreakInto when m_rspConnector is null

[xusheng6]

Summary

• Adds the same !m_isTargetRunning || !m_rspConnector guard to CorelliumAdapter::BreakInto that GdbAdapter::BreakInto already has, preventing a null-pointer dereference in RspConnector::SendRaw.
• Resolves the Sentry-reported crash EXCEPTION_ACCESS_VIOLATION_READ / 0x50 at rspconnector.cpp:223 reached via CorelliumAdapter::BreakInto.

Fixes #1066
Fixes BINARYNINJA-3X

Sentry context

• 23 events since 2026-04-15 across many distinct users (Belgium, Saudi Arabia, US, Vietnam, France, China, macOS once)
• 22/23 events on Free edition, 1 on Personal, none on Commercial/Enterprise
• 22/23 on Windows (heavily Windows 11 25H2 / build 26200), 1 on macOS
• All on binaryninja@5.3.9434
• Likely scenario: users pick "Corellium" from the adapter dropdown without ever connecting, then click Pause — m_rspConnector is still null and the unconditional SendRaw crashes. The 0x50 faulting address is consistent with a null this deref reading a field at offset 0x50 inside RspConnector.

Test plan

• Build the debugger and confirm Corellium adapter still attaches/breaks normally on a live target.
• Select the Corellium adapter without connecting, click Pause, confirm no crash (previously crashed, now should just no-op).

🤖 Generated with Claude Code