fix: avoid undefined/null expression values

[nolanlawson]

We could accidentally render the string undefined in some cases which would be wrong. Might as well guard against it.

[github-actions]

📊 Tachometer Benchmark Results

Summary

benchmark-total

• emoji-picker-element-change-tab: unsure 🔍 -3% - +5% (-0.94ms - +1.67ms)
  ^{this-change vs tip-of-tree}
• emoji-picker-element-database-interactions: unsure 🔍 -8% - +3% (-9.56ms - +3.59ms)
  ^{this-change vs tip-of-tree}
• emoji-picker-element-first-load: unsure 🔍 -8% - +2% (-4.26ms - +1.02ms)
  ^{this-change vs tip-of-tree}
• emoji-picker-element-many-custom-emoji: unsure 🔍 -6% - +8% (-7.71ms - +10.49ms)
  ^{this-change vs tip-of-tree}
• emoji-picker-element-search: unsure 🔍 -2% - +9% (-0.63ms - +4.10ms)
  ^{this-change vs tip-of-tree}
• emoji-picker-element-second-load: unsure 🔍 -4% - +2% (-1.75ms - +1.00ms)
  ^{this-change vs tip-of-tree}

Results

emoji-picker-element-change-tab

• Browser: chrome-headless 128.0.0.0
• Sample size: 50
• Built by: Benchmarks #502

• Commit: cd34cd9

Version	Avg time	vs this-change	vs tip-of-tree tip-of-tree
this-change	34.08ms - 36.05ms	-	unsure 🔍 -3% - +5% -0.94ms - +1.67ms
tip-of-tree tip-of-tree	33.85ms - 35.55ms	unsure 🔍 -5% - +3% -1.67ms - +0.94ms	-

emoji-picker-element-database-interactions

• Browser: chrome-headless 128.0.0.0
• Sample size: 50
• Built by: Benchmarks #502

• Commit: cd34cd9

Version	Avg time	vs this-change	vs tip-of-tree tip-of-tree
this-change	107.29ms - 115.79ms	-	unsure 🔍 -8% - +3% -9.56ms - +3.59ms
tip-of-tree tip-of-tree	109.51ms - 119.54ms	unsure 🔍 -3% - +9% -3.59ms - +9.56ms	-

emoji-picker-element-first-load

• Browser: chrome-headless 128.0.0.0
• Sample size: 50
• Built by: Benchmarks #502

• Commit: cd34cd9

Version	Avg time	vs this-change	vs tip-of-tree tip-of-tree
this-change	50.86ms - 54.37ms	-	unsure 🔍 -8% - +2% -4.26ms - +1.02ms
tip-of-tree tip-of-tree	52.27ms - 56.21ms	unsure 🔍 -2% - +8% -1.02ms - +4.26ms	-

emoji-picker-element-many-custom-emoji

• Browser: chrome-headless 128.0.0.0
• Sample size: 50
• Built by: Benchmarks #502

• Commit: cd34cd9

Version	Avg time	vs this-change	vs tip-of-tree tip-of-tree
this-change	135.11ms - 147.94ms	-	unsure 🔍 -6% - +8% -7.71ms - +10.49ms
tip-of-tree tip-of-tree	133.68ms - 146.58ms	unsure 🔍 -7% - +5% -10.49ms - +7.71ms	-

emoji-picker-element-search

• Browser: chrome-headless 128.0.0.0
• Sample size: 70
• Built by: Benchmarks #502

• Commit: cd34cd9

Version	Avg time	vs this-change	vs tip-of-tree tip-of-tree
this-change	44.35ms - 47.74ms	-	unsure 🔍 -2% - +9% -0.63ms - +4.10ms
tip-of-tree tip-of-tree	42.66ms - 45.96ms	unsure 🔍 -9% - +1% -4.10ms - +0.63ms	-

emoji-picker-element-second-load

• Browser: chrome-headless 128.0.0.0
• Sample size: 50
• Built by: Benchmarks #502

• Commit: cd34cd9

Version	Avg time	vs this-change	vs tip-of-tree tip-of-tree
this-change	43.16ms - 44.94ms	-	unsure 🔍 -4% - +2% -1.75ms - +1.00ms
tip-of-tree tip-of-tree	43.38ms - 45.48ms	unsure 🔍 -2% - +4% -1.00ms - +1.75ms	-

_{tachometer-reporter-action v2 for Benchmarks}

[github-actions]

Size Change: +12 B (+0.03%)

Total Size: 37.4 kB

Filename	Size	Change
./bundle.js	37.4 kB	+12 B (+0.03%)

_{compressed-size-action}