[Backport 8.3] Fix types and naming during code-gen of internally tagged unions

src/Elastic.Clients.Elasticsearch/_Generated/Types/Analysis/Analyzers.g.cs

@@ -36,7 +36,7 @@ public Analyzers(IDictionary<string, IAnalyzer> container) : base(container)
 	{
 	}
 
-	public void Add(string name, IAnalyzer analyzers) => BackingDictionary.Add(name, analyzers);
+	public void Add(string name, IAnalyzer analyzer) => BackingDictionary.Add(name, analyzer);
 }
 
 public sealed partial class AnalyzersDescriptor : IsADictionaryDescriptor<AnalyzersDescriptor, Analyzers, string, IAnalyzer>

src/Elastic.Clients.Elasticsearch/_Generated/Types/Analysis/CharFilterDefinitions.g.cs

@@ -36,7 +36,7 @@ public CharFilterDefinitions(IDictionary<string, ICharFilterDefinition> containe
 	{
 	}
 
-	public void Add(string name, ICharFilterDefinition charFilterDefinitions) => BackingDictionary.Add(name, charFilterDefinitions);
+	public void Add(string name, ICharFilterDefinition charFilterDefinition) => BackingDictionary.Add(name, charFilterDefinition);
 }
 
 public sealed partial class CharFilterDefinitionsDescriptor : IsADictionaryDescriptor<CharFilterDefinitionsDescriptor, CharFilterDefinitions, string, ICharFilterDefinition>

src/Elastic.Clients.Elasticsearch/_Generated/Types/Analysis/Normalizers.g.cs

@@ -36,7 +36,7 @@ public Normalizers(IDictionary<string, INormalizer> container) : base(container)
 	{
 	}
 
-	public void Add(string name, INormalizer normalizers) => BackingDictionary.Add(name, normalizers);
+	public void Add(string name, INormalizer normalizer) => BackingDictionary.Add(name, normalizer);
 }
 
 public sealed partial class NormalizersDescriptor : IsADictionaryDescriptor<NormalizersDescriptor, Normalizers, string, INormalizer>

src/Elastic.Clients.Elasticsearch/_Generated/Types/Analysis/TokenFilterDefinitions.g.cs

@@ -36,7 +36,7 @@ public TokenFilterDefinitions(IDictionary<string, ITokenFilterDefinition> contai
 	{
 	}
 
-	public void Add(string name, ITokenFilterDefinition tokenFilterDefinitions) => BackingDictionary.Add(name, tokenFilterDefinitions);
+	public void Add(string name, ITokenFilterDefinition tokenFilterDefinition) => BackingDictionary.Add(name, tokenFilterDefinition);
 }
 
 public sealed partial class TokenFilterDefinitionsDescriptor : IsADictionaryDescriptor<TokenFilterDefinitionsDescriptor, TokenFilterDefinitions, string, ITokenFilterDefinition>

src/Elastic.Clients.Elasticsearch/_Generated/Types/Analysis/TokenizerDefinitions.g.cs

@@ -36,7 +36,7 @@ public TokenizerDefinitions(IDictionary<string, ITokenizerDefinition> container)
 	{
 	}
 
-	public void Add(string name, ITokenizerDefinition tokenizerDefinitions) => BackingDictionary.Add(name, tokenizerDefinitions);
+	public void Add(string name, ITokenizerDefinition tokenizerDefinition) => BackingDictionary.Add(name, tokenizerDefinition);
 }
 
 public sealed partial class TokenizerDefinitionsDescriptor : IsADictionaryDescriptor<TokenizerDefinitionsDescriptor, TokenizerDefinitions, string, ITokenizerDefinition>

src/Elastic.Clients.Elasticsearch/_Generated/Types/Mapping/Properties.g.cs

@@ -36,7 +36,7 @@ public Properties(IDictionary<PropertyName, IProperty> container) : base(contain
 	{
 	}
 
-	public void Add(string name, IProperty property) => BackingDictionary.Add(name, property);
+	public void Add(PropertyName propertyName, IProperty property) => BackingDictionary.Add(propertyName, property);
 }
 
 public sealed partial class PropertiesDescriptor<TDocument> : IsADictionaryDescriptor<PropertiesDescriptor<TDocument>, Properties, PropertyName, IProperty>