Introduce PrometheusLabelView in label_util to support zero-allocation hot-path Prometheus label formatting and lookup, previous FormatPrometheusLabels was using heap allocation even in cold path - #936
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…n hot-path Prometheus label formatting and lookup, previous FormatPrometheusLabels was using heap allocation even in cold path PiperOrigin-RevId: 985077989
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Introduce PrometheusLabelView in label_util to support zero-allocation hot-path Prometheus label formatting and lookup, previous FormatPrometheusLabels was using heap allocation even in cold path