Codewhisperer can not be used behind proxy

## Problem
2023-11-17 14:02:30 [ERROR]: webviewId="authWebview": Error: Webview error
-> Error: Webview backend command failed: "startCodeWhispererBuilderIdSetup()"
-> Error: Failed to connect to AWS Builder ID [FailedToConnect]
-> Error: Hostname/IP does not match certificate's altnames: Host: oidc.us-east-1.amazonaws.com. is not in the cert's altnames: DNS:tremorhub.com, DNS:*.partners.tremorhub.com, DNS:*.eb.tremorhub.com, DNS:*.cast.telaria.com, DNS:*.telaria.com, DNS:*.ads.tremorhub.com, DNS:*.tremorhub.com, DNS:*.publishers.tremorhub.com [ERR_TLS_CERT_ALTNAME_INVALID]

## Steps to reproduce the issue

## Expected behavior

## System details (run the `AWS: About Toolkit` command)
2023-11-17 14:02:30 [ERROR]: webviewId="authWebview": Error: Webview error
-> Error: Webview backend command failed: "startCodeWhispererBuilderIdSetup()"
-> Error: Failed to connect to AWS Builder ID [FailedToConnect]
-> Error: Hostname/IP does not match certificate's altnames: Host: oidc.us-east-1.amazonaws.com. is not in the cert's altnames: DNS:tremorhub.com, DNS:*.partners.tremorhub.com, DNS:*.eb.tremorhub.com, DNS:*.cast.telaria.com, DNS:*.telaria.com, DNS:*.ads.tremorhub.com, DNS:*.tremorhub.com, DNS:*.publishers.tremorhub.com [ERR_TLS_CERT_ALTNAME_INVALID]
2023-11-17 14:04:16 [INFO]: telemetry: sent batch (size=20)
2023-11-17 14:04:17 [INFO]: telemetry: sent batch (size=7)
2023-11-17 14:07:50 [INFO]: selected AWS ID sign in
2023-11-17 14:07:51 [ERROR]: API response (oidc.us-east-1.amazonaws.com /client/register): {
reason: "Host: oidc.us-east-1.amazonaws.com. is not in the cert's altnames: DNS:tremorhub.com, DNS:*.partners.tremorhub.com, DNS:*.eb.tremorhub.com, DNS:*.cast.telaria.com, DNS:*.telaria.com, DNS:*.ads.tremorhub.com, DNS:*.tremorhub.com, DNS:*.publishers.tremorhub.com",
host: 'oidc.us-east-1.amazonaws.com',
cert: {
subject: [Object: null prototype] { CN: 'tremorhub.com' },
issuer: [Object: null prototype] {
C: 'US',
O: 'Amazon',
CN: 'Amazon RSA 2048 M02'
},
subjectaltname: 'DNS:tremorhub.com, DNS:*.partners.tremorhub.com, DNS:*.eb.tremorhub.com, DNS:*.cast.telaria.com, DNS:*.telaria.com, DNS:*.ads.tremorhub.com, DNS:*.tremorhub.com, DNS:*.publishers.tremorhub.com',
infoAccess: [Object: null prototype] {
'OCSP - URI': [Array],
'CA Issuers - URI': [Array]
},
ca: false,
modulus: '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',
bits: 2048,
exponent: '0x10001',
pubkey: ,
valid_from: 'Jul 3 00:00:00 2023 GMT',
valid_to: 'Jul 30 23:59:59 2024 GMT',
fingerprint: '19:A2:1F:26:7D:1F:7E:24:58:53:CE:9D:90:CD:A3:DD:82:1D:61:DD',
fingerprint256: '06:06:70:2F:1F:AF:66:09:C5:7E:BA:1D:2A:48:AC:F8:E4:EC:E2:47:59:A6:7A:8C:1E:0B:79:B0:07:61:0F:5A',
fingerprint512: 'D8:7F:B1:7D:20:68:9F:3C:11:CE:4A:E5:E0:D5:C8:DA:29:39:94:38:22:00:CD:67:6C:0C:19:B7:1A:02:BC:FC:25:00:E0:BC:D8:5C:09:24:0E:8B:70:5D:D1:92:43:09:83:99:30:EA:E0:E2:E9:5A:AE:5A:CA:11:A9:96:A3:14',
ext_key_usage: [ '1.3.6.1.5.5.7.3.1', '1.3.6.1.5.5.7.3.2' ],
serialNumber: '048550878c376615fc991bb97d9fafad',
raw: ,
issuerCertificate: {
subject: [Object: null prototype],
issuer: [Object: null prototype],
infoAccess: [Object: null prototype],
ca: true,
modulus: 'bb4318c65aa879de29e8b56f2ebea543cf2e58d3075e374a2e95a4458f73a9929058596ffeaaae4672a079502db0d89c8d83ee10f4b1dcc4a9f9ee02322cb9740b1b703c4ef5fa577a053411557bc3652c91ef06c78a63cf2c68bc2e7f191957093be20e275a534c5f395af58e45df0c111f03151f8e37c46cfa52d192652a90f78785c795fb4e5aadf30862f2a09a29d679acd6a4fabf6751384e78296a15de285f2721fff45ced8d1e5f528d587612235364df59988222b726f1f4eb783e2bdb4703add979380a82776587e588fb3bfb8b8e077a94598c0d45630619f55bfff54902e58cfcff253ae5f823684fb05473387bf6320b6a2cacf584ee027e7573',
bits: 2048,
exponent: '0x10001',
pubkey: ,
valid_from: 'Aug 23 22:25:30 2022 GMT',
valid_to: 'Aug 23 22:25:30 2030 GMT',
fingerprint: '41:4A:20:60:B7:38:C6:35:CC:7F:C2:43:E0:52:61:55:92:83:0C:53',
fingerprint256: 'B0:F3:30:A3:1A:0C:50:98:7E:1C:3A:7B:B0:2C:2D:DA:68:29:91:D3:16:5B:51:7B:D4:4F:BA:4A:60:20:BD:94',
fingerprint512: '5A:99:EE:B9:7B:B5:65:26:5F:E6:12:8A:BC:EC:C8:75:5D:BF:64:1C:B8:E7:20:59:6F:44:B9:7D:0F:39:E1:CC:CB:B8:07:48:70:48:B4:4A:5C:F9:B0:94:21:66:09:20:DC:7B:D8:74:48:5F:8A:E0:DF:DA:C2:A7:30:82:7B:F1',
ext_key_usage: [Array],
serialNumber: '0773124a4bcbd44ec7b53beaf194842d3a0fa1',
raw: ,
issuerCertificate: [Object]
}
},
code: 'ERR_TLS_CERT_ALTNAME_INVALID'
}
2023-11-17 14:07:51 [ERROR]: webviewId="authWebview": Error: Webview error
-> Error: Webview backend command failed: "startCodeWhispererBuilderIdSetup()"
-> Error: Failed to connect to AWS Builder ID [FailedToConnect]
-> Error: Hostname/IP does not match certificate's altnames: Host: oidc.us-east-1.amazonaws.com. is not in the cert's altnames: DNS:tremorhub.com, DNS:*.partners.tremorhub.com, DNS:*.eb.tremorhub.com, DNS:*.cast.telaria.com, DNS:*.telaria.com, DNS:*.ads.tremorhub.com, DNS:*.tremorhub.com, DNS:*.publishers.tremorhub.com [ERR_TLS_CERT_ALTNAME_INVALID]
2023-11-17 14:09:17 [INFO]: telemetry: sent batch (size=2)

Start with the CodeWhisperer AWS Builder ID setup flow and the oidc.us-east-1.amazonaws.com request described in the logs, reproducing it behind the reported proxy. Done means Builder ID authentication works through that proxy without the TLS certificate hostname error, with the relevant behavior covered by a regression test.

Written by the indexing model from the issue text.