chore: update md xml to include xml header

Author: peternhale

src/convert/transformers/decomposeExternalServiceRegistrationTransformer.ts

@@ -20,6 +20,8 @@ type ESR = JsonMap & {
   ExternalServiceRegistration: ExternalServiceRegistration;
 };
 
+const xmlDeclaration = '<?xml version="1.0" encoding="UTF-8"?>\n';
+
 export class DecomposeExternalServiceRegistrationTransformer extends BaseMetadataTransformer {
   // eslint-disable-next-line @typescript-eslint/require-await,class-methods-use-this,@typescript-eslint/no-unused-vars
   public async toSourceFormat(input: {
@@ -59,12 +61,14 @@ export class DecomposeExternalServiceRegistrationTransformer extends BaseMetadat
       format: true,
       ignoreAttributes: false,
       suppressUnpairedNode: true,
-      processEntities: false,
+      processEntities: true,
       indentBy: '    ',
     });
+    // eslint-disable-next-line @typescript-eslint/no-unsafe-assignment
+    const source = xmlBuilder.build({ ExternalServiceRegistration: xmlContent });
     writeInfos.push({
       // eslint-disable-next-line @typescript-eslint/no-unsafe-assignment
-      source: xmlBuilder.build({ ExternalServiceRegistration: xmlContent }),
+      source: Readable.from(Buffer.from(xmlDeclaration + source)),
       output: esrFilePath,
     });
 
@@ -104,7 +108,7 @@ export class DecomposeExternalServiceRegistrationTransformer extends BaseMetadat
     // Write combined content back to md format
     writeInfos.push({
       // eslint-disable-next-line @typescript-eslint/no-unsafe-argument,@typescript-eslint/no-unsafe-assignment
-      source: Readable.from(Buffer.from(source)),
+      source: Readable.from(Buffer.from(xmlDeclaration + source)),
       output: path.resolve(esrMdApiFilePath),
     });
     this.context.decomposedExternalServiceRegistration.transactionState.esrRecords.push({ component, writeInfos });

test/snapshot/sampleProjects/preset-decomposedESR/__snapshots__/verify-md-files.expected/externalServiceRegistrations/OpenAPIChallenge.externalServiceRegistration

@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <ExternalServiceRegistration xmlns="http://soap.sforce.com/2006/04/metadata">
     <label>BankService</label>
     <namedCredential>ntest</namedCredential>

test/snapshot/sampleProjects/preset-decomposedESR/__snapshots__/verify-source-files.expected/force-app/main/default/externalServiceRegistrations/OpenAPIChallenge.externalServiceRegistration-meta.xml

@@ -1,10 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <ExternalServiceRegistration xmlns="http://soap.sforce.com/2006/04/metadata">
     <label>BankService</label>
     <namedCredential>ntest</namedCredential>
     <registrationProviderType>Custom</registrationProviderType>
     <schemaType>OpenApi3</schemaType>
     <schemaUrl>/accounts/schema</schemaUrl>
-    <serviceBinding>{"host":"","basePath":"/","allowedSchemes":[],"requestMediaTypes":[],"responseMediaTypes":[],"compatibleMediaTypes":{}}</serviceBinding>
+    <serviceBinding>{&quot;host&quot;:&quot;&quot;,&quot;basePath&quot;:&quot;/&quot;,&quot;allowedSchemes&quot;:[],&quot;requestMediaTypes&quot;:[],&quot;responseMediaTypes&quot;:[],&quot;compatibleMediaTypes&quot;:{}}</serviceBinding>
     <status>Complete</status>
     <systemVersion>3</systemVersion>
 </ExternalServiceRegistration>

test/snapshot/sampleProjects/preset-decomposedESR/force-app/main/default/externalServiceRegistrations/OpenAPIChallenge.externalServiceRegistration-meta.xml

@@ -1,10 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <ExternalServiceRegistration xmlns="http://soap.sforce.com/2006/04/metadata">
     <label>BankService</label>
     <namedCredential>ntest</namedCredential>
     <registrationProviderType>Custom</registrationProviderType>
     <schemaType>OpenApi3</schemaType>
     <schemaUrl>/accounts/schema</schemaUrl>
-    <serviceBinding>{"host":"","basePath":"/","allowedSchemes":[],"requestMediaTypes":[],"responseMediaTypes":[],"compatibleMediaTypes":{}}</serviceBinding>
+    <serviceBinding>{&quot;host&quot;:&quot;&quot;,&quot;basePath&quot;:&quot;/&quot;,&quot;allowedSchemes&quot;:[],&quot;requestMediaTypes&quot;:[],&quot;responseMediaTypes&quot;:[],&quot;compatibleMediaTypes&quot;:{}}</serviceBinding>
     <status>Complete</status>
     <systemVersion>3</systemVersion>
 </ExternalServiceRegistration>

test/snapshot/sampleProjects/preset-decomposedESR/mdapiOutput/externalServiceRegistrations/OpenAPIChallenge.externalServiceRegistration

@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <ExternalServiceRegistration xmlns="http://soap.sforce.com/2006/04/metadata">
     <label>BankService</label>
     <namedCredential>ntest</namedCredential>