CLDR-17229 keyboard: v45 cherry-pick from maint-44

- cherry-pick from maint-44: CLDR-17204 kbd: dtd fix for locales (#3369)

- the <locale id> attribute was set as @value which caused it to be wrongly flagged as a duplicate.

(cherry picked from commit b07c9d8)

keyboards/dtd/ldmlKeyboard3.dtd

@@ -31,7 +31,6 @@ Please view the subcommittee page for the most recent information.
     <!--@TECHPREVIEW-->
 <!ATTLIST locale id CDATA #REQUIRED >
     <!--@MATCH:validity/bcp47-wellformed-->
-    <!--@VALUE-->
 
 <!ELEMENT version EMPTY >
     <!--@TECHPREVIEW-->

keyboards/dtd/ldmlKeyboard3.xsd

@@ -76,7 +76,6 @@ Note: DTD @-annotations are not currently converted to .xsd. For full CLDR file
   </xs:element>
 
 
-
   <xs:element name="version">
     <xs:complexType>
       <xs:attribute name="number"/>

tools/cldr-code/src/test/java/org/unicode/cldr/unittest/TestDtdData.java

@@ -766,6 +766,7 @@ public boolean isDistinguishingOld(DtdType dtdType, String elementName, String a
                         || elementName.equals("keyList") && attribute.equals("id")
                         || elementName.equals("flick") && attribute.equals("id")
                         || elementName.equals("import") && attribute.equals("path")
+                        || elementName.equals("locale") && attribute.equals("id")
                         || elementName.equals("import") && attribute.equals("base")
                         || elementName.equals("layer") && attribute.equals("id")
                         || elementName.equals("string") && attribute.equals("id")