Add checks for empty values in logging stream (backport #2479)

[github-actions]

Backport of #2479

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Fix for crash in production

Description

It looks like the new logging code is hitting a problem with missing fields

2023-07-13 09:35:47 | {\"log\":\" at Object.res (/usr/src/forge/app/node_modules/@flowforge/flowforge/forge/forge.js:61:48)\\n\",\"stream\":\"stderr\",\"time\":\"2023-07-13T08:35:47.706549905Z\"}
2023-07-13 09:35:47 | {\"log\":\"TypeError: Cannot read properties of undefined (reading 'raw')\\n\",\"stream\":\"stderr\",\"time\":\"2023-07-13T08:35:47.706546145Z\"}
2023-07-13 09:35:47 | {\"log\":\"\\n\",\"stream\":\"stderr\",\"time\":\"2023-07-13T08:35:47.706542565Z\"}
2023-07-13 09:35:47 | {\"log\":\" ^\\n\",\"stream\":\"stderr\",\"time\":\"2023-07-13T08:35:47.706538427Z\"}
2023-07-13 09:35:47 | {\"log\":\" url: reply.request.raw.url,\\n\",\"stream\":\"stderr\",\"time\":\"2023-07-13T08:35:47.706534265Z\"}
2023-07-13 09:35:47 | {\"log\":\"/usr/src/forge/app/node_modules/@flowforge/flowforge/forge/forge.js:61\\n\",\"stream\":\"stderr\",\"time\":\"2023-07-13T08:35:47.706520639Z\"}

Related Issue(s)

Checklist

• I have read the contribution guidelines
• Suitable unit/system level tests have been added and they pass
• Documentation has been updated
• Upgrade instructions
• Configuration details
• Concepts
• Changes flowforge.yml?
• Issue/PR raised on flowforge/helm to update ConfigMap Template
• Issue/PR raised on flowforge/CloudProject to update values for Staging/Production

Labels

• Backport needed? -> add the backport label
• Includes a DB migration? -> add the area:migration label