CBG-4497 centralize blip correlation ids

[torcolvin]

CBG-4497 centralize blip correlation ids

Force assignment of blip correlation IDs to match the blip context for _blipsync and ISGR. The important change is in NewSGBlipContextWithProtocols to have bc.Logger = defaultBlipLogger(ctx) use the right correlation id.

ISGR and _blipsync did reset the context on BlipSyncContext after its construction, but this seems confusing and error prone, so I just forced setting the correlation id in NewBlipSyncContext constructor. I could leave the this part of the code alone and just do the change in NewSGBlipContextWithProtocols

Pre-review checklist

• Removed debug logging (fmt.Print, log.Print, ...)
• Logging sensitive data? Make sure it's tagged (e.g. base.UD(docID), base.MD(dbName))
• Updated relevant information in the API specifications (such as endpoint descriptions, schemas, ...) in docs/api

Integration Tests

• GSI=true,xattrs=true https://jenkins.sgwdev.com/job/SyncGateway-Integration/3063/

[bbrks]

This has subtly changed the format of BLIP context IDs which is probably undesirable.
I think it's just a case of passing the context ID through FormatBlipContextID()?

Otherwise looks OK to me

Compare before:

2025-04-25T13:04:59.891+01:00 [INF] HTTP: c:#005 db:db1 GET /db1/_blipsync (as <ud>demo</ud>)
2025-04-25T13:04:59.891+01:00 [INF] HTTP+: c:[1e02c999] db:db1 #005:     --> 101 [1e02c999] Upgraded to WebSocket protocol BLIP_3+CBMobile_2 (as <ud>demo</ud>)  (0.0 ms)
2025-04-25T13:04:59.891+01:00 [INF] WS: c:#005 db:db1 Start BLIP/Websocket handler
2025-04-25T13:04:59.892+01:00 [INF] SyncMsg: c:[1e02c999] db:db1 col:_default #1: Type:changes #Changes:200
2025-04-25T13:04:59.950+01:00 [DBG] SyncMsg+: c:[1e02c999] db:db1 #1: Type:changes   --> OK Time:58.634333ms

After:

2025-04-25T13:08:14.918+01:00 [INF] HTTP: c:#007 db:db1 GET /db1/_blipsync (as <ud>demo</ud>)
2025-04-25T13:08:14.918+01:00 [INF] HTTP+: c:[47f59398] db:db1 #007:     --> 101 [47f59398] Upgraded to WebSocket protocol BLIP_3+CBMobile_2 (as <ud>demo</ud>)  (0.0 ms)
2025-04-25T13:08:14.918+01:00 [INF] WS: c:47f59398 db:db1 Start BLIP/Websocket handler
2025-04-25T13:08:14.918+01:00 [INF] SyncMsg: c:47f59398 db:db1 col:_default #1: Type:changes #Changes:200
2025-04-25T13:08:14.976+01:00 [DBG] SyncMsg+: c:47f59398 db:db1 #1: Type:changes   --> OK Time:57.73725ms

[bbrks]

Looks good sans honk

[bbrks]

Suggested change

"fmt"