account/alternate_contact: Fix eventual consistency

[YakDriver]

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Relates #22186

Output from acceptance testing:

% make testacc TESTS=TestAccAccountAlternateContact_ PKG=account 
==> Checking that code complies with gofmt requirements...
TF_ACC=1 go test ./internal/service/account/... -v -count 1 -parallel 20 -run='TestAccAccountAlternateContact_'  -timeout 180m
--- PASS: TestAccAccountAlternateContact_basic (34.16s)
--- PASS: TestAccAccountAlternateContact_disappears (13.84s)
--- SKIP: TestAccAccountAlternateContact_accountID (0.57s)
PASS
ok  	github.com/hashicorp/terraform-provider-aws/internal/service/account	50.459s

[github-actions]

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