feat(jubilee): implement price package sync, diff engine, and UI actions

[av-dev2]

Add the Jubilee price package integration: fetching packages from the API, computing diffs between successive syncs, and wiring up the UI trigger on Healthcare Insurance Company.

Jubilee price_package.py - bulk insert fix:

• Add creation, owner, modified, modified_by to the bulk_insert fields list and populate them with frappe.session.user and now_datetime(), fixing missing required DB columns during insert

Jubilee price_package.py - response data parsing:

• Replace json.loads() with a new _parse_response_data() helper that tries json.loads first, then falls back to ast.literal_eval for legacy records stored via str() (which produces single-quoted Python repr instead of valid JSON)
• Add ast import to support the fallback parser

Jubilee price_package.py - diff comparison improvements:

• Use .get(field) instead of direct key access to avoid KeyError when a field exists in one response but not the other
• Iterate over the union of both key sets (set(current) | set(previous)) instead of only current_item keys, so removed fields are also detected
• Remove stale commented-out code

Jubilee price_package.py - record mapping corrections:

• Rename price_row.type to price_row.change_type to match the updated child DocType field name
• Map ItemPrice instead of UnitPrice to price_row.itemprice to match the actual API response key
• Add price_row.cleanname mapping from CleanName
• Remove commented-out olditemcode and record assignments

NHIF price_package.py - same diff comparison fix:

• Apply the identical .get() and set union fix to the NHIF set_package_diff function for consistency between both insurance integrations

insurance_company.js - UI actions:

• Add "Get Jubilee Packages" button calling enqueue_get_jubilee_price_packages to trigger background package sync
• Remove "Process Jubilee Records" button (no longer needed as a separate manual action)
• Normalize arrow function syntax across all Jubilee action buttons
• Remove extra blank line in process_jubilee_coverages

Files modified:

• hms_tz/jubilee/api/price_package.py
• hms_tz/nhif/nhif_api/price_package.py
• hms_tz/nhif/api/insurance_company.js

[codacy-production]

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