Use error code 1305 instead of hard coding error msg

[kt474]

Summary

Instead of hard coding the error reason "RAN TOO LONG", use the error code returned from the API instead.

Example:

~/Documents/qiskit-ibm-runtime/qiskit_ibm_runtime/runtime_job_v2.py in result(self, timeout, decoder)
    137             error_message = self._reason if self._reason else self._error_message
    138             if self._reason_code == 1305:
--> 139                 raise RuntimeJobMaxTimeoutError(error_message)
    140             raise RuntimeJobFailureError(f"Unable to retrieve job result. {error_message}")
    141         if self._status == "CANCELLED":

RuntimeJobMaxTimeoutError: 'Error code 1305; Ran too long'

Details and comments

Fixes #989

[coveralls]

Pull Request Test Coverage Report for Build 9601363645

Details

• 8 of 10 (80.0%) changed or added relevant lines in 3 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.04%) to 82.04%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
qiskit_ibm_runtime/runtime_job_v2.py	0	2	0.0%

Totals
Change from base Build 9584804898:	0.04%
Covered Lines:	6080
Relevant Lines:	7411

---

💛 - Coveralls

[coveralls]

Pull Request Test Coverage Report for Build 9616583670

Details

• 8 of 10 (80.0%) changed or added relevant lines in 3 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.04%) to 82.04%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
qiskit_ibm_runtime/runtime_job_v2.py	0	2	0.0%

Totals
Change from base Build 9605113454:	0.04%
Covered Lines:	6080
Relevant Lines:	7411

---

💛 - Coveralls