Add UnsafeAppendBoolToBitmap() to dict and REE builders

These builder implementations were inheriting the default implementation
from `Builder`, which does not bump the length of the inner builders.

This would leave the builder in an inconsistent state where the
top-level builder had the correct length but the inner builder doesn't.

Author: serramatutu

arrow/array/dictionary.go

@@ -623,6 +623,12 @@ func (b *dictionaryBuilder) Release() {
 	}
 }
 
+func (b *dictionaryBuilder) UnsafeAppendBoolToBitmap(v bool) {
+	b.length += 1
+	b.nulls += 1
+	b.idxBuilder.UnsafeAppendBoolToBitmap(v)
+}
+
 func (b *dictionaryBuilder) AppendNull() {
 	b.length += 1
 	b.nulls += 1

arrow/array/encoded.go

@@ -386,6 +386,15 @@ func (b *RunEndEncodedBuilder) ContinueRun(n uint64) {
 	b.addLength(n)
 }
 
+func (b *RunEndEncodedBuilder) UnsafeAppendBoolToBitmap(v bool) {
+	if !v {
+		b.finishRun()
+	}
+
+	b.values.UnsafeAppendBoolToBitmap(v)
+	b.addLength(1)
+}
+
 func (b *RunEndEncodedBuilder) AppendNull() {
 	b.finishRun()
 	b.values.AppendNull()