fix: Avoid forwarding is.na() to is.nan() to support non-numeric data

[krlmlr]

No description provided.

[github-actions]

This is how benchmark results would change (along with a 95% confidence interval in relative change) if 8faf6c8 is merged into main:

• ✔️001_tpch_01: 24.1ms -> 24.5ms [-2.34%, +5.71%]
• ✔️001_tpch_02: 69.9ms -> 70.3ms [-0.67%, +1.89%]
• ✔️001_tpch_03: 40.9ms -> 40.5ms [-2.44%, +0.47%]
• ✔️001_tpch_04: 22.7ms -> 22.9ms [-0.27%, +1.97%]
• ✔️001_tpch_05: 58.6ms -> 58.9ms [-0.64%, +1.4%]
• ✔️001_tpch_06: 14.4ms -> 14.6ms [-0.78%, +3.92%]
• ✔️001_tpch_07: 77.2ms -> 77ms [-2.14%, +1.5%]
• ✔️001_tpch_08: 101ms -> 100ms [-1.04%, +0.58%]
• ✔️001_tpch_09: 76.3ms -> 76ms [-1.52%, +0.89%]
• ✔️001_tpch_10: 50.8ms -> 50.8ms [-1.7%, +1.6%]
• ✔️001_tpch_11: 33.6ms -> 33.7ms [-1.28%, +1.75%]
• ✔️001_tpch_12: 28.8ms -> 29ms [-1.11%, +1.92%]
• ✔️001_tpch_13: 28.2ms -> 28.7ms [-1.66%, +4.97%]
• ✔️001_tpch_14: 22ms -> 22.2ms [-1.47%, +2.81%]
• ✔️001_tpch_15: 35.4ms -> 35.1ms [-3.82%, +2.09%]
• ✔️001_tpch_16: 43.6ms -> 44.2ms [-0.13%, +2.95%]
• ✔️001_tpch_17: 28.4ms -> 28.5ms [-1.43%, +1.78%]
• ✔️001_tpch_18: 24.4ms -> 24.2ms [-3.4%, +1.2%]
• ✔️001_tpch_19: 72ms -> 72.5ms [-1.07%, +2.43%]
• ✔️001_tpch_20: 58ms -> 57ms [-3.87%, +0.67%]
• ✔️001_tpch_21: 87.3ms -> 86.1ms [-2.96%, +0.11%]
• ✔️001_tpch_22: 75.1ms -> 75.1ms [-1.91%, +1.72%]
• ✔️010_tpch_01: 83.5ms -> 80.5ms [-9.37%, +2.09%]
• ✔️010_tpch_02: 71.1ms -> 71.7ms [-0.77%, +2.57%]
• ✔️010_tpch_03: 59.9ms -> 60ms [-0.85%, +1.23%]
• ✔️010_tpch_04: 43.6ms -> 43.8ms [-1.92%, +3.05%]
• ✔️010_tpch_05: 93.2ms -> 92.8ms [-3.03%, +2.07%]
• ✔️010_tpch_06: 34.1ms -> 34.7ms [-6.87%, +10.24%]
• ✔️010_tpch_07: 112ms -> 111ms [-2.46%, +1.53%]
• ✔️010_tpch_08: 134ms -> 132ms [-6.21%, +3.78%]
• ✔️010_tpch_09: 118ms -> 119ms [-0.99%, +2.86%]
• ✔️010_tpch_10: 75.7ms -> 76.5ms [-1.23%, +3.49%]
• ✔️010_tpch_11: 39.8ms -> 40.4ms [-2.26%, +5.13%]
• ✔️010_tpch_12: 58.3ms -> 59.1ms [-1.25%, +3.69%]
• 🚀010_tpch_13: 54.1ms -> 52.2ms [-6.32%, -0.55%]
• ✔️010_tpch_14: 38.3ms -> 38.7ms [-0.23%, +2.14%]
• ✔️010_tpch_15: 54ms -> 56.7ms [-3.27%, +13.13%]
• ✔️010_tpch_16: 46ms -> 46ms [-3.25%, +3.41%]
• ✔️010_tpch_17: 55.9ms -> 55.7ms [-4.58%, +3.95%]
• ✔️010_tpch_18: 55.2ms -> 52.1ms [-13.9%, +2.69%]
• ✔️010_tpch_19: 117ms -> 116ms [-1.34%, +0.17%]
• ✔️010_tpch_20: 67ms -> 68.8ms [-0.82%, +6.2%]
• ✔️010_tpch_21: 245ms -> 246ms [-2.47%, +2.99%]
• ✔️010_tpch_22: 78.2ms -> 78.8ms [-0.97%, +2.66%]
• ✔️100_tpch_01: 336ms -> 335ms [-13.73%, +13.03%]
• ✔️100_tpch_02: 128ms -> 129ms [-3.19%, +5.27%]
• ✔️100_tpch_03: 183ms -> 184ms [-5.97%, +6.37%]
• ❗🐌100_tpch_04: 149ms -> 162ms [+1.88%, +14.61%]
• ✔️100_tpch_05: 263ms -> 262ms [-8.84%, +8.16%]
• ✔️100_tpch_06: 102ms -> 107ms [-10.54%, +19.93%]
• ✔️100_tpch_07: 246ms -> 245ms [-6.54%, +5.12%]
• ✔️100_tpch_08: 262ms -> 256ms [-11.67%, +7.75%]
• ✔️100_tpch_09: 349ms -> 352ms [-9.19%, +11.03%]
• ✔️100_tpch_10: 214ms -> 216ms [-14.24%, +16.09%]
• ✔️100_tpch_11: 86.6ms -> 90.9ms [-16.41%, +26.32%]
• ✔️100_tpch_12: 196ms -> 206ms [-2.3%, +13.11%]
• ✔️100_tpch_13: 363ms -> 338ms [-18.34%, +4.59%]
• ✔️100_tpch_14: 123ms -> 122ms [-19.7%, +18.03%]
• ✔️100_tpch_15: 217ms -> 211ms [-16.35%, +10.8%]
• ✔️100_tpch_16: 133ms -> 133ms [-14.53%, +13.9%]
• ✔️100_tpch_17: 182ms -> 178ms [-12.22%, +7.49%]
• ✔️100_tpch_18: 194ms -> 192ms [-4.78%, +2.97%]
• ✔️100_tpch_19: 309ms -> 277ms [-22.51%, +1.53%]
• ✔️100_tpch_20: 182ms -> 186ms [-3.11%, +7.37%]
• ✔️100_tpch_21: 1.35s -> 1.35s [-8.69%, +8.01%]
• ✔️100_tpch_22: 173ms -> 177ms [-6.84%, +11.41%]

Further explanation regarding interpretation and methodology can be found in the documentation.