### Description

Users may see the below log message under various circumstances,

> https://github.com/elastic/elasticsearch/blob/v8.3.3/server/src/main/java/org/elasticsearch/index/mapper/TextFieldMapper.java#L899-L906
> Text fields are not optimised for operations that require per-document field data like aggregations and sorting, so these operations are disabled by default. Please use a keyword field instead. Alternatively, set fielddata=true on [FIELD_NAME] in order to load field data by uninverting the inverted index. Note that this can use significant memory.

as people seem to have mentioned this message in [Elasticsearch](https://github.com/elastic/elasticsearch/issues?q=is%3Aissue+%22Text+fields+are+not+optimised+for+operations%22+), [Kibana](https://github.com/elastic/kibana/issues?q=is%3Aissue+%22Text+fields+are+not+optimised+for+operations%22+), and [Beats](https://github.com/elastic/beats/issues?q=is%3Aissue+%22Text+fields+are+not+optimised+for+operations%22+) GH issues as well as at [forums](https://discuss.elastic.co/search?q=%22Text%20fields%20are%20not%20optimised%20for%20operations%22).

I don't intend to suggest revise of this well-known message but want to propose an insertion of contextual information - i.e. field and index name to clarify where to start troubleshooting at a glance.

**Proposal**

```diff
diff --git a/server/src/main/java/org/elasticsearch/index/mapper/TextFieldMapper.java b/server/src/main/java/org/elasticsearch/index/mapper/TextFieldMapper.java
index 045be484f09..74df90ffc0f 100644
--- a/server/src/main/java/org/elasticsearch/index/mapper/TextFieldMapper.java
+++ b/server/src/main/java/org/elasticsearch/index/mapper/TextFieldMapper.java
@@ -909,7 +909,8 @@ public class TextFieldMapper extends FieldMapper {
             } else if (operation == FielddataOperation.SEARCH) {
                 if (fielddata == false) {
                     throw new IllegalArgumentException(
-                        "Text fields are not optimised for operations that require per-document "
+                        "Field data is disabled on [" + name() + "] in [" + fieldDataContext.fullyQualifiedIndexName() + "]. "
+                            + "Text fields are not optimised for operations that require per-document "
                             + "field data like aggregations and sorting, so these operations are disabled by default. Please use a "
                             + "keyword field instead. Alternatively, set fielddata=true on ["
                             + name()
```

If this proposal sounds reasonable, please let me know, and I will open PRs accordingly. Thanks.
server/src/main/java/org/elasticsearch/index/mapper/TextFieldMapper.java
@Override
    protected void doXContentBody(XContentBuilder builder, Params params) throws IOException {
        
        boolean includeDefaults = params.paramAsBoolean("include_defaults", false);
        builder.field("type", contentType());
        final Builder b = (Builder) getMergeBuilder();
        b.index.toXContent(builder, includeDefaults);
        b.store.toXContent(builder, includeDefaults);
        this.multiFields.toXContent(builder, params);
        this.copyTo.toXContent(builder);
        b.meta.toXContent(builder, includeDefaults);
        b.indexOptions.toXContent(builder, includeDefaults);
        b.termVectors.toXContent(builder, includeDefaults);
        b.norms.toXContent(builder, includeDefaults);
        b.analyzers.indexAnalyzer.toXContent(builder, includeDefaults);
        b.analyzers.searchAnalyzer.toXContent(builder, includeDefaults);
        b.analyzers.searchQuoteAnalyzer.toXContent(builder, includeDefaults);
        b.similarity.toXContent(builder, includeDefaults);
        b.eagerGlobalOrdinals.toXContent(builder, includeDefaults);
        b.analyzers.positionIncrementGap.toXContent(builder, includeDefaults);
        b.fieldData.toXContent(builder, includeDefaults);
        b.freqFilter.toXContent(builder, includeDefaults);
        b.indexPrefixes.toXContent(builder, includeDefaults);
        b.indexPhrases.toXContent(builder, includeDefaults);
    }
    @Override
    public SourceLoader.SyntheticFieldLoader syntheticFieldLoader() {
        if (copyTo.copyToFields().isEmpty() != true) {
            throw new IllegalArgumentException(
                "field [" + name() + "] of type [" + typeName() + "] doesn't support synthetic source because it declares copy_to"