Add exception handling to report filter config loading in dashboard.py

[Copilot]

Module-level initialization in dashboard.py can fail if SNowInstance().report_filter_config raises an exception, preventing the module from being imported.

Changes:

• Wrap report_filter_config access in try-except to catch initialization failures
• Log warnings on exception and fallback to None for both filter constants
• Move config cleanup into else block to avoid undefined variable errors

# Before
config = SNowInstance().report_filter_config
if config is None:
    REPORT_DATE_FILTER = REPORT_TIME_FILTER = None
else:
    REPORT_DATE_FILTER = config["report_date_filter"]
    REPORT_TIME_FILTER = config["report_time_filter"]
del config

# After
try:
    config = SNowInstance().report_filter_config
except Exception as exc:
    logging.warning("Failed to load report filter config: %s", exc)
    REPORT_DATE_FILTER = REPORT_TIME_FILTER = None
else:
    if config is None:
        REPORT_DATE_FILTER = REPORT_TIME_FILTER = None
    else:
        REPORT_DATE_FILTER = config["report_date_filter"]
        REPORT_TIME_FILTER = config["report_time_filter"]
    del config

This ensures the module imports successfully even when ServiceNow instance access fails.

Original prompt

On dashboard.py:33-38, Make a PR with the following changes.

---

try:
config = SNowInstance().report_filter_config
except Exception as exc:
logging.warning("Failed to load report filter config: %s", exc)
REPORT_DATE_FILTER = REPORT_TIME_FILTER = None
else:
if config is None:
REPORT_DATE_FILTER = REPORT_TIME_FILTER = None
else:
REPORT_DATE_FILTER = config["report_date_filter"]
REPORT_TIME_FILTER = config["report_time_filter"]
del config

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