EDU-6953 update Activity History changes on docs

[GabrielAzion]

Related issue: EDU-6953 update Activity History changes on docs

Activity History Documentation Update

Changes Made

1. Added clientId field to activityHistoryEvents (GraphQL API)

Files updated:

• events-fields.mdx (EN)
• events-campos.mdx (PT-BR)

Added field:

| clientId | Unique Azion client identifier. Example: `8437r` |

2. Added upstreamLocalAddr field to workloadEvents (GraphQL API)

Files updated:

• events-fields.mdx (EN)
• events-campos.mdx (PT-BR)

Added field:

| upstreamLocalAddr | Local IP address used by the edge to establish the connection with the origin server. It represents the outgoing (source) IP used when communicating with the upstream. Example: `10.0.12.34` |