iOS: Improve HTML text parsing and add iOS tests (#418)

### TL;DR
Enhanced HTML text handling for iOS platform and added comprehensive unit tests.

### What changed?
- Added error handling to iOS HTML text processing with `runCatching`
- Improved HTML tag replacement by adding support for `</ul>` and `<li>` tags
- Added trim functionality to remove unnecessary whitespace
- Created unit tests to verify HTML tag replacement functionality

### Why make this change?
To improve the reliability of HTML text processing on iOS and ensure consistent text display across different HTML formats. The addition of unit tests provides confidence in the HTML parsing functionality and helps prevent regressions.

feature/trip-planner/ui/src/iosMain/kotlin/xyz/ksharma/krail/trip/planner/ui/alerts/HtmlText.kt

@@ -0,0 +1,37 @@
+package xyz.ksharma.krail.trip.planner.ui.alerts
+
+import androidx.compose.foundation.clickable
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+import xyz.ksharma.krail.taj.components.Text
+
+@Composable
+actual fun HtmlText(
+    text: String,
+    modifier: Modifier,
+    onClick: () -> Unit,
+    color: Color,
+    urlColor: Color,
+) {
+    Text(text = replaceHtmlTags(text), modifier = Modifier.clickable { onClick() }, color = color)
+}
+
+// TODO - A workaround for iOS until https://issuetracker.google.com/issues/139326648 is fixed.
+fun replaceHtmlTags(html: String): String {
+   return runCatching {
+        html
+            .replace("</div>", "\n")
+            .replace("</li>", "\n")
+            .replace("</ul>", "\n")
+            .replace("<li>", "")
+            .replace("<ul>", "")
+            .replace(Regex("<a href=\"[^\"]*\">"), " ")
+            .replace("&nbsp;", " ")
+            .replace(Regex("<[^>]*>"), "") // Remove all other HTML tags
+            .replace(Regex("\n{3,}"), "\n\n")  // Replace multiple new lines with a single new line
+            .trim()
+    }.getOrElse {
+        html // Return the original text if an exception occurs
+    }
+}

feature/trip-planner/ui/src/iosTest/kotlin/xyz/ksharma/krail/trip/planner/ui/alerts/HtmlTextTest.kt

@@ -0,0 +1,63 @@
+package xyz.ksharma.krail.trip.planner.ui.alerts
+
+import kotlin.test.Test
+import kotlin.test.assertEquals
+
+class HtmlTextTest {
+
+    @Test
+    fun testReplaceHtmlTags_withDiv() {
+        val input = "Hello</div>World"
+        val expected = "Hello\nWorld"
+        assertEquals(expected, replaceHtmlTags(input))
+    }
+
+    @Test
+    fun testReplaceHtmlTags_withLi() {
+        val input = "Item 1</li>Item 2"
+        val expected = "Item 1\nItem 2"
+        assertEquals(expected, replaceHtmlTags(input))
+    }
+
+    @Test
+    fun testReplaceHtmlTags_withUl() {
+        val input = "<ul>Item 1</ul>"
+        val expected = "Item 1"
+        assertEquals(expected, replaceHtmlTags(input))
+    }
+
+    @Test
+    fun testReplaceHtmlTags_withAnchor() {
+        val input = "<a href=\"http://example.com\">Link</a>"
+        val expected = "Link"
+        assertEquals(expected, replaceHtmlTags(input))
+    }
+
+    @Test
+    fun testReplaceHtmlTags_withNbsp() {
+        val input = "Hello&nbsp;World"
+        val expected = "Hello World"
+        assertEquals(expected, replaceHtmlTags(input))
+    }
+
+    @Test
+    fun testReplaceHtmlTags_withMultipleHtmlTags() {
+        val input = "<div>Hello</div><ul>Item 1</ul><li>Item 2</li>"
+        val expected = "Hello\nItem 1\nItem 2"
+        assertEquals(expected, replaceHtmlTags(input))
+    }
+
+    @Test
+    fun testReplaceHtmlTags_withMultipleNewLines() {
+        val input = "Hello\n\n\nWorld"
+        val expected = "Hello\n\nWorld"
+        assertEquals(expected, replaceHtmlTags(input))
+    }
+
+    @Test
+    fun testReplaceHtmlTags_withComplexHtml() {
+        val input = "<div>Hello</div><a href=\"http://example.com\">Link</a>&nbsp;World"
+        val expected = "Hello\n Link World"
+        assertEquals(expected, replaceHtmlTags(input))
+    }
+}