Erase view types at every list/component boundary, not just leaves

Release builds were hitting rustc's recursion limit compiling the
hydrate target: impl IntoView doesn't erase a component's concrete
type within the same crate, so calling a component (or a <For>/<Show>
children closure) without wrapping the result in .into_any() lets the
caller's own type keep growing to include everything nested inside it.
AlternativeCard's requirement fields already did this correctly at
their own leaves; QuestionView's <For alternatives> call into
AlternativeCard, and AlternativeCard's own <For features> closure,
plus ResourceValue/AnswerRow's nested <For>s, didn't - so the depth
compounded across all of them. Verified with a real
`cargo leptos build --release` (was previously untested - only dev
builds had been run against this code).

src/app.rs

@@ -168,6 +168,7 @@ fn QuestionView(
                             parent_hash=parent_hash.clone()
                         />
                     }
+                    .into_any()
                 }
             />
         </div>
@@ -495,6 +496,7 @@ fn AlternativeCard(
                                     />
                                 </div>
                             }
+                            .into_any()
                         }
                     }
                 />
@@ -604,6 +606,7 @@ fn ResourceValue(
                                         answer=answer
                                     />
                                 }
+                                .into_any()
                             }
                         }
                     />
@@ -655,6 +658,7 @@ fn AnswerRow(
                                 <span class="answer-field-value">{text}</span>
                             </div>
                         }
+                        .into_any()
                     }
                 />
             </div>
@@ -698,6 +702,7 @@ fn AnswerRow(
                                         {t.label.clone()}
                                     </button>
                                 }
+                                .into_any()
                             }
                         }
                     />