Fix datatype mismatch in InitializeHub pipeline for PricingUnits ingestion

[Copilot]

The InitializeHub pipeline uses decimal type when loading PricingUnits external data, but the table schema defines x_PricingBlockSize as real, causing ingestion failures.

Changes

• app.bicep: Changed x_PricingBlockSize type from decimal to real in the PricingUnits external data ingestion command to match the table schema defined in IngestionSetup_HubInfra.kql
• changelog.md: Documented fix under FinOps hubs v13

// Before
command: '.set-or-replace PricingUnits <| externaldata(..., x_PricingBlockSize: decimal, ...)'

// After  
command: '.set-or-replace PricingUnits <| externaldata(..., x_PricingBlockSize: real, ...)'

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• aka.ms
  • Triggering command: /usr/local/bin/bicep bicep build src/templates/finops-hub/modules/Microsoft.FinOpsHubs/Analytics/app.bicep (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

Original prompt

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This section details on the original issue you should resolve

<issue_title>[ADF]: InitialiseHub pipeline: Datatype missmatch</issue_title>
<issue_description>In Analytics/app.bicep:

Instead of .set-or-replace PricingUnits <| externaldata(x_PricingUnitDescription: string, AccountTypes: string, x_PricingBlockSize: decimal, PricingUnit: string)

use

Instead of .set-or-replace PricingUnits <| externaldata(x_PricingUnitDescription: string, AccountTypes: string, x_PricingBlockSize: real, PricingUnit: string)

as the PricingUnits table was migrated to real for x_PricingBlockSize (see IngestionSetup_HubInfra.kql)</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes [ADF]: InitialiseHub pipeline: Datatype missmatch #1911

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