Generate webHtmlApp's strings, collapse a redundant string key

Strings.kt is now generated at build time (:webHtmlApp:generateStrings,
in webHtmlApp/build.gradle.kts) by parsing shared's strings.xml
directly, rather than a hand-maintained duplicate that could silently
drift from it. Names are mechanical camelCase of the XML key, so a few
call sites got more verbose (e.g. moveUp -> moveCurrencyUpContentDescription)
in exchange for zero manual sync. Only covers the base English locale.

Also collapses currency_option_label_local into currency_option_label:
the two had identical English text and existed only as a hook for a
future translation to phrase the user's own currency differently, which
no locale currently does. Removes the info.code == localeCurrencyCode
branching (and the now-pointless localeCurrencyCode parameter/field) from
all three UI implementations - PriceScreen.kt, CurrencyPickerSheet.swift,
and HtmlCurrencyPicker.kt - plus IosConverterState.localeCurrencyCode,
which existed solely to feed that branch on the Swift side.

Fixes a real regression surfaced while verifying the above by actually
building the Xcode project (not done since currencyFlagEmoji() gained
its supportsFlagEmoji parameter): Kotlin/Native doesn't generate
default-parameter overloads for Swift/ObjC-exported functions, so both
Swift call sites needed the argument passed explicitly, via the correct
exported facade name for an expect/actual pair - the actual file's
(SystemCurrencies_appleKt), not the common one (SystemCurrenciesKt).

Also drops "(DOM)" from webHtmlApp's page title.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

iosApp/iosApp/ContentView.swift

@@ -274,7 +274,6 @@ struct ContentView: View {
                 unselectedCurrencies: state.unselectedCurrencies,
                 pricedCurrencyCodes: state.pricedCurrencyCodes,
                 sourceName: state.sourceName,
-                localeCurrencyCode: state.localeCurrencyCode,
                 selectedCount: state.selectedCurrencyCodes.count,
                 onToggle: { viewModel.onFiatCurrencyToggled($0) },
                 onReset: { viewModel.onSelectedCurrenciesReset() }
@@ -404,7 +403,7 @@ private struct NumericField: View {
 }
 
 private func currencyFieldLabel(for code: String) -> String {
-    if let flag = CurrencyFlagKt.currencyFlagEmoji(code: code) {
+    if let flag = CurrencyFlagKt.currencyFlagEmoji(code: code, supportsFlagEmoji: SystemCurrencies_appleKt.supportsFlagEmoji()) {
         return "\(flag) \(code)"
     }
     return code

iosApp/iosApp/CurrencyPickerSheet.swift

@@ -7,7 +7,6 @@ struct CurrencyPickerSheet: View {
     let unselectedCurrencies: [CurrencyInfo]
     let pricedCurrencyCodes: [String]
     let sourceName: String
-    let localeCurrencyCode: String?
     let selectedCount: Int
     let onToggle: (String) -> Void
     let onReset: () -> Void
@@ -142,19 +141,11 @@ struct CurrencyPickerSheet: View {
     }
 
     private func currencyLabel(for info: CurrencyInfo) -> String {
-        let text: String
-        if info.code == localeCurrencyCode {
-            text = IosLocalizationKt.localizedFormattedString(
-                resource: MR.strings.shared.currency_option_label_local,
-                args: [info.code, info.displayName]
-            )
-        } else {
-            text = IosLocalizationKt.localizedFormattedString(
-                resource: MR.strings.shared.currency_option_label,
-                args: [info.code, info.displayName]
-            )
-        }
-        if let flag = CurrencyFlagKt.currencyFlagEmoji(code: info.code) {
+        let text = IosLocalizationKt.localizedFormattedString(
+            resource: MR.strings.shared.currency_option_label,
+            args: [info.code, info.displayName]
+        )
+        if let flag = CurrencyFlagKt.currencyFlagEmoji(code: info.code, supportsFlagEmoji: SystemCurrencies_appleKt.supportsFlagEmoji()) {
             return "\(flag) \(text)"
         }
         return text