[Infra] Disable infra plugin in serverless projects (#165289)

closes https://github.com/elastic/kibana/issues/158925

## Summary

This PR disables the infra plugin in the `oblt` and `security` projects

### Oblt
**Navbar**
<img width="300" alt="image"
src="f88fd2a5-ed58-4bcf-b5ad-5b25357daf5c">

**Saved Objects**
<img width="800" alt="image"
src="4140760c-2572-4391-8977-bc97fcd14bb8">



**Server-side APIs**
<img width="800" alt="image"
src="eb22b024-dfd5-4c7f-b760-bfd2c633f759">

**Infra routes**
/metrics/inventory

<img width="500" alt="image"
src="6ddba766-c6f0-40d0-9183-2bcbae348d52">

**Alert rules**
<img width="300" alt="image"
src="d03d087e-d562-425b-a4d9-a17d5fe0b158">


### APM

Infra links hidden in the Transaction "Investigate" pop up menu
<img width="800" alt="image"
src="d9364d55-6e06-4ac0-8668-6ce2331a6250">

Infra links removed from Services Overview Instance actions
<img width="800" alt="image"
src="73410e5c-be6c-4174-8df0-76fb6a25b2f6">

** Server Routes **

<img width="800" alt="image"
src="488f639b-81e8-497d-a55e-4e7f31644bc5">

<img width="800" alt="image"
src="4366005a-2eb8-4f33-8d1e-09865cad06b4">

<img width="800" alt="image"
src="46b34d0d-8171-4d8d-bfb8-fd4c32583fbb">





### Security

**Saved Objects**
<img width="800" alt="image"
src="14f08e7e-565b-42e9-8fc4-753d1b54c14a">



**Server-side APIs**
<img width="800" alt="image"
src="eb22b024-dfd5-4c7f-b760-bfd2c633f759">

**Infra routes**
/metrics/inventory

<img width="500" alt="image"
src="6ddba766-c6f0-40d0-9183-2bcbae348d52">


### How to test

- Start a local ES instance
- run `yarn serverless-oblt` and `yarn serverless-security`
- Validate the screenshots above.

---------

Co-authored-by: Kibana Machine <42973632+kibanamachine@users.noreply.github.com>

x-pack/plugins/ux/kibana.jsonc

@@ -17,7 +17,6 @@
       "observabilityShared",
       "observabilityAIAssistant",
       "embeddable",
-      "infra",
       "inspector",
       "apm"
     ],