[GetCollectionOnlyHasValueAndNextLink] Not handle singleton URL - false positive

**Describe the bug**

singleton url like "/providers/Microsoft.Billing/billingAccounts/{billingAccountName}/billingProfilesSummaries/default" is taken as collection url

```json

"/providers/Microsoft.Billing/billingAccounts/{billingAccountName}/billingProfilesSummaries/default": {
"get": {
"tags": [
"BillingProfilesSummaries"
],
"description": "Gets the summary of billing profiles under a billing account. The operation is supported for billing accounts with agreement type Enterprise Agreement.",
"externalDocs": {
"url": "https://docs.microsoft.com/en-us/rest/api/billing/"
},
"operationId": "BillingProfilesSummaries_Get",
"produces": [
"application/json"
],
"parameters": [
{
"$ref": "./types.json#/parameters/billingAccountName"
},
{
"$ref": "./types.json#/parameters/apiVersionParameter"
}
],
"responses": {
"200": {
"description": "OK. The request has succeeded.",
"schema": {
"$ref": "#/definitions/BillingProfilesSummary"
}
},
"default": {
"description": "Default response",
"schema": {
"$ref": "./types.json#/definitions/ArmErrorResponse"
}
}
},
"x-ms-examples": {
"BillingProfilesSummaries_Get": {
"$ref": "./examples/BillingProfilesSummariesGet.json"
}
}
}
}
},
```

**To Reproduce**
Steps to reproduce the behavior:

**Expected behavior**
A clear and concise description of what you expected to happen.

**Screenshots**

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- Version [e.g. 22]

**Additional context**
https://github.com/Azure/azure-rest-api-specs-pr/pull/12774